fixing dulicated stop area id broken

[nkuehnel]

When trying to auto fix a duplicated id error of stop areas the following exception occurs:

{{{
URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-05-02 23:28:33 +0200 (Tue, 02 May 2017)
Build-Date:2017-05-02 21:34:40
Revision:12039
Relative:URL: ^/trunk

Identification: JOSM/1.5 (12039 en) Windows 10 64-Bit
Memory Usage: 247 MB / 247 MB (64 MB allocated, but free)
Java version: 1.8.0_73-b02, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1366x768
Maximum Screen Size: 1366x768
VM arguments: [-Djava.security.manager, -Djava.security.policy=file:<java.home>\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=%UserProfile%\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\56\1ee8cfb8-287b2d87, -Djnlpx.remove=false, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.splashport=53245, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp, -Djnlpx.jvm=<java.home>\bin\javaw.exe]
Dataset consistency test: No problems found

Plugins:

• matsim (v0.7.7)
• reverter (33088)

Last errors/warnings:

• W: extended font config - overriding 'allfonts.symbol=Symbol' with 'Segoe UI Symbol'
• W: Update plugins - org.openstreetmap.josm.plugins.PluginHandler$UpdatePluginsMessagePanel[,0,0,0x0,invalid,layout=java.awt.GridBagLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=9,maximumSize=,minimumSize=,preferredSize=]
• E: Failed to load map renderer class 'org.matsim.contrib.josm.MapRenderer'. The class wasn't found.
• E: Can't activate map renderer class 'org.matsim.contrib.josm.MapRenderer', because the class wasn't found.
• E: Activating the standard map renderer instead.
• E: Failed to locate image 'matsim-scenario.png'
• W: null: Could not get presets icon matsim-scenario.png
• E: Failed to locate image 'images/dialogs/logo.png'
• W: Link: Could not get presets icon images/dialogs/logo.png
• E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Complete node with null coordinates: {Node id=-51749 version=0 VT }

=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: org.matsim.contrib.josm.actions.ConvertAction$1 (442)
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Complete node with null coordinates: {Node id=-51749 version=0 VT }
at org.openstreetmap.josm.data.osm.Node.setDataset(Node.java:227)
at org.openstreetmap.josm.data.osm.DataSet.addPrimitive(DataSet.java:596)
at org.matsim.contrib.josm.model.Importer.convertStops(Importer.java:148)
at org.matsim.contrib.josm.model.Importer.createMatsimLayer(Importer.java:55)
at org.matsim.contrib.josm.model.LayerConverter.convertWithFullTransit(LayerConverter.java:37)
at org.matsim.contrib.josm.actions.ConvertAction$1.realRun(ConvertAction.java:59)
at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:95)
at java.lang.Thread.run(Unknown Source)
}}}