InvalidPathException at startup when invalid URL is registered for map paint style

[anonymous]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-05-29 16:19:58 +0200 (Mon, 29 May 2017)
Build-Date:2017-05-29 14:25:03
Revision:12275
Relative:URL: ^/trunk

Identification: JOSM/1.5 (12275 en) Windows 7 64-Bit
OS Build number: Windows 7 Enterprise null (7601)
Memory Usage: 141 MB / 989 MB (81 MB allocated, but free)
Java version: 1.8.0_111-b14, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080

Plugins:
+ AddrInterpolation
+ CADTools
+ ColorPlugin
+ DirectDownload
+ DirectUpload
+ ImageWayPoint
+ ImportImagePlugin
+ ImproveOsm (110)
+ OpenStreetCam
+ PicLayer
+ SeaMapEditor
+ ShapeTools
+ apache-commons
+ buildings_tools
+ continuosDownload
+ ejml
+ geochat
+ geojson
+ geotools
+ imagery_offset_db
+ jogl
+ jts
+ kendzi3d
+ kendzi3d-resources
+ log4j (32699)
+ measurement
+ opendata
+ osm-obj-info
+ osmarender
+ photo_geotagging
+ tageditor
+ tagging-preset-tester
+ turnrestrictions
+ utilsplugin2
+ walkingpapers
+ wikipedia

Tagging presets:
+ http://dev.openseamap.org/josm/Presets_Hafen.xml
+ http://josm.openstreetmap.de/josmfile?page=Presets/NewParkingFeatures&preset
+ https://josm.openstreetmap.de/josmfile?page=Presets/BuildingPreset&zip=1
+ https://raw.githubusercontent.com/OpenNauticalChart/josm/master/Presets_Hafen.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/Historical_Objects&zip=1
+ https://raw.githubusercontent.com/OpenNauticalChart/josm/master/INT-1-preset.xml

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Landcover&zip=1
+ https://raw.githubusercontent.com/OpenSeaMap/josm/master/INT1_Seamark.mapcss
- https://github.com/hotosm/HDM-JOSM-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/NewHighwayColors&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/NewParkingFeatures&zip=1
-  http://osm.wzh.be/josm/entur.mapcss

Last errors/warnings:
- E: Failed to locate image 'presets/marina.png'
- W:  Harbour: Could not get presets icon presets/marina.png
- E: Handled by bug report queue: org.openstreetmap.josm.tools.JosmRuntimeException: java.util.concurrent.ExecutionException: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm. Cause: java.util.concurrent.ExecutionException: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm. Cause: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (1)
org.openstreetmap.josm.tools.JosmRuntimeException: java.util.concurrent.ExecutionException: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm
	at org.openstreetmap.josm.Main.initialize(Main.java:571)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:359)
Caused by: java.util.concurrent.ExecutionException: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm
	at java.util.concurrent.FutureTask.report(Unknown Source)
	at java.util.concurrent.FutureTask.get(Unknown Source)
	at org.openstreetmap.josm.Main.initialize(Main.java:563)
	... 1 more
Caused by: java.nio.file.InvalidPathException: Illegal char <:> at index 5:  http:\osm.wzh.be\josm
	at sun.nio.fs.WindowsPathParser.normalize(Unknown Source)
	at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
	at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
	at sun.nio.fs.WindowsPath.parse(Unknown Source)
	at sun.nio.fs.WindowsFileSystem.getPath(Unknown Source)
	at java.io.File.toPath(Unknown Source)
	at org.openstreetmap.josm.io.FileWatcher.register(FileWatcher.java:97)
	at org.openstreetmap.josm.io.FileWatcher.registerStyleSource(FileWatcher.java:67)
	at org.openstreetmap.josm.gui.mappaint.MapPaintStyles.loadStyleForFirstTime(MapPaintStyles.java:280)
	at org.openstreetmap.josm.gui.mappaint.MapPaintStyles.readFromPreferences(MapPaintStyles.java:270)
	at org.openstreetmap.josm.gui.preferences.map.MapPaintPreference.initialize(MapPaintPreference.java:190)
	at org.openstreetmap.josm.Main$InitializationTask.call(Main.java:608)
	at org.openstreetmap.josm.Main$InitializationTask.call(Main.java:592)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[Don-vip]

In 12410/josm:

fix #14945 - InvalidPathException at startup when invalid URL is registered for map paint style