checkgroup in chunk leads to checks added multiple times

[stephankn]

What steps will reproduce the problem?

Add attached preset. It will add the checkboxes defined in the checkgroup for each occurrence of the chunk referred.

So in case the chunk is referenced three times the checkboxes will be added three times. On each item will be nine checkboxes instead of the expected three ones.

Ungrouped check work as expected.

<presets xmlns="http://josm.openstreetmap.de/tagging-preset-1.0"
    version="201412020"
    description="checkgroup in a chunk results in multiple adds"
>
        <chunk id="mychunk">
                <checkgroup columns="1">
                        <check key="k1" text="check 1" />
                        <check key="k2" text="check 2" />
                        <check key="k3" text="check 3" />
                </checkgroup>
        </chunk>
        <item name="bug item 1">
                <reference ref="mychunk" />
        </item>
        <item name="bug item 2">
                <reference ref="mychunk" />
        </item>
        <item name="bug item 3">
                <reference ref="mychunk" />
        </item>
</presets>

What is the expected result?

three checks on each item

What happens instead?

nine checks on each item

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

Build-Date: 2014-12-02 11:32:56
Revision: 7760
Is-Local-Build: true

Identification: JOSM/1.5 (7760 SVN en) Windows 8 64-Bit
Memory Usage: 887 MB / 5461 MB (523 MB allocated, but free)
Java version: 1.7.0_45, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Dataset consistency test: No problems found

Plugins:
- ImportImagePlugin (30738)
- OpeningHoursEditor (30737)
- editgpx (30737)
- geotools (30762)
- jts (30762)
- log4j (30762)
- mirrored_download (30762)
- reverter (30737)
- tagging-preset-tester (30736)

Last errors/warnings:
- W: Could not get presets icon styles/standard/misc/landuse/orchard.svg
- E: Failed to locate image 'styles/standard/misc/landuse/allotments.svg'
- W: Could not get presets icon styles/standard/misc/landuse/allotments.svg
- E: Failed to locate image 'styles/standard/misc/landuse/meadow.svg'
- W: Could not get presets icon styles/standard/misc/landuse/meadow.svg

[Don-vip]

In 7889/josm:

fix #10801 - presets reading: checkgroup in chunk leads to checks added multiple times