junctionchecking plugin creates log with hardcoded name

[jttt]

When JOSM is started with junctionchecking plugin enabled, following exception is printed in the console:

java.io.FileNotFoundException: /home/joerg/Desktop/josm.log (No such file or directory)
	at java.io.FileOutputStream.openAppend(Native Method)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:177)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:102)
	at org.apache.log4j.FileAppender.setFile(FileAppender.java:290)
	at org.apache.log4j.FileAppender.<init>(FileAppender.java:109)
	at org.apache.log4j.FileAppender.<init>(FileAppender.java:120)
	at org.openstreetmap.josm.plugins.JunctionChecker.JunctionCheckerPlugin.mapFrameInitialized(JunctionCheckerPlugin.java:94)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.openstreetmap.josm.plugins.PluginProxy.mapFrameInitialized(PluginProxy.java:29)
	at org.openstreetmap.josm.plugins.PluginHandler.notifyMapFrameChanged(PluginHandler.java:740)
	at org.openstreetmap.josm.Main.setMapFrame(Main.java:185)
	at org.openstreetmap.josm.Main.addLayer(Main.java:232)
	at org.openstreetmap.josm.actions.NewAction.actionPerformed(NewAction.java:24)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
	at java.awt.Component.processMouseEvent(Component.java:6267)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
	at java.awt.Component.processEvent(Component.java:6032)
	at java.awt.Container.processEvent(Container.java:2041)
	at java.awt.Component.dispatchEventImpl(Component.java:4630)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
	at java.awt.Container.dispatchEventImpl(Container.java:2085)
	at java.awt.Window.dispatchEventImpl(Window.java:2478)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)