WMS-Endpoint-Checkbox produces error when checked before loading

[anonymous]

What steps will reproduce the problem?

1. Add a new WMS-Layer
2. Check "Save WMS-Endpoint only" (german: "Nur WMS-Endpunkt speichern, Ebenen bei der Benutzung auswählen") *before* querying WMS-Layers (german: "Ebenen abrufen")

What is the expected result?
There shouldn't be an error ;-)

What happens instead?
An Messagebox "Unexpected Error" opened and pointed me here.

Please provide any additional information below. Attach a screenshot if
possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-06-05 01:34:49
Last Changed Author: Don-vip
Revision: 5990
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-06-05 00:52:58 +0200 (Wed, 05 Jun 2013)
Last Changed Rev: 5990

Identification: JOSM/1.5 (5990 de) Windows XP 32-Bit
Memory Usage: 61 MB / 247 MB (16 MB allocated, but free)
Java version: 1.7.0_21, Oracle Corporation, Java HotSpot(TM) Client VM
VM arguments: [-Djava.security.policy=file:C:\Programme\Java\jre7\lib\security\javaws.policy, -DtrustProxy=true, -Xverify:remote, -Djnlpx.home=C:\Programme\Java\jre7\bin, -Djnlpx.origFilenameArg=C:\DOKUME~1\Kai\LOKALE~1\Temp\josm-4.jnlp, -Djnlpx.remove=true, -Dsun.awt.warmup=true, -Xbootclasspath/a:C:\Programme\Java\jre7\lib\javaws.jar;C:\Programme\Java\jre7\lib\deploy.jar;C:\Programme\Java\jre7\lib\plugin.jar, -Djnlpx.splashport=2352, -Djnlpx.jvm=C:\Programme\Java\jre7\bin\javaw.exe]

Plugin: Create_grid_of_ways (29435)
Plugin: FixAddresses (29519)
Plugin: InfoMode (29435)
Plugin: OpeningHoursEditor (29435)
Plugin: PicLayer (29601)
Plugin: alignways (29435)
Plugin: buildings_tools (29596)
Plugin: conflation (0.1.6)
Plugin: continuosDownload (28565)
Plugin: contourmerge (1005)
Plugin: dataimport (29435)
Plugin: editgpx (29596)
Plugin: geochat (29592)
Plugin: graphview (29525)
Plugin: imageryadjust (29609)
Plugin: importvec (29435)
Plugin: jts (29613)
Plugin: measurement (29625)
Plugin: multipoly-convert (29435)
Plugin: osmarender (29639)
Plugin: pbf (29435)
Plugin: reltoolbox (29535)
Plugin: reverter (29627)
Plugin: todo (29155)
Plugin: turnlanes (29435)
Plugin: turnrestrictions (29435)
Plugin: undelete (29555)
Plugin: utilsplugin2 (29615)

java.lang.NullPointerException
	at org.openstreetmap.josm.gui.preferences.imagery.AddWMSLayerPanel$2.itemStateChanged(AddWMSLayerPanel.java:91)
	at javax.swing.AbstractButton.fireItemStateChanged(Unknown Source)
	at javax.swing.AbstractButton$Handler.itemStateChanged(Unknown Source)
	at javax.swing.DefaultButtonModel.fireItemStateChanged(Unknown Source)
	at javax.swing.JToggleButton$ToggleButtonModel.setSelected(Unknown Source)
	at javax.swing.JToggleButton$ToggleButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$200(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.WaitDispatchSupport$2.run(Unknown Source)
	at java.awt.WaitDispatchSupport$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.WaitDispatchSupport.enter(Unknown Source)
	at java.awt.Dialog.show(Unknown Source)
	at java.awt.Component.show(Unknown Source)
	at java.awt.Component.setVisible(Unknown Source)
	at java.awt.Window.setVisible(Unknown Source)
	at java.awt.Dialog.setVisible(Unknown Source)
	at org.openstreetmap.josm.gui.ExtendedDialog.setVisible(ExtendedDialog.java:476)
	at org.openstreetmap.josm.gui.ExtendedDialog.showDialog(ExtendedDialog.java:269)
	at org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference$ImageryProvidersPanel$NewEntryAction.actionPerformed(ImageryPreference.java:440)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
...<snip>...

[Don-vip]

In 6016/josm:

fix #8812 - NPE in add wms panel