Bug 473838 - Empty Icon URI leads to exception when loading the model

Change-Id: I3c4b4b865328cadf0e9291999324c1c08027753b
Signed-off-by: Christoph Keimel <c.keimel@emsw.de>
diff --git a/bundles/runtime/org.eclipse.fx.ui.workbench.renderers.fx/src/org/eclipse/fx/ui/workbench/renderers/fx/DefWindowRenderer.java b/bundles/runtime/org.eclipse.fx.ui.workbench.renderers.fx/src/org/eclipse/fx/ui/workbench/renderers/fx/DefWindowRenderer.java
index d40bb37..d39e394 100755
--- a/bundles/runtime/org.eclipse.fx.ui.workbench.renderers.fx/src/org/eclipse/fx/ui/workbench/renderers/fx/DefWindowRenderer.java
+++ b/bundles/runtime/org.eclipse.fx.ui.workbench.renderers.fx/src/org/eclipse/fx/ui/workbench/renderers/fx/DefWindowRenderer.java
@@ -1038,7 +1038,7 @@
 		 */
 		@Inject
 		public void setImageUrl(@Named(UIEvents.UILabel.ICONURI) @Optional String iconUri) {
-			if (iconUri != null) {
+			if (iconUri != null && !iconUri.isEmpty()) {
 
 				String[] split = iconUri.split(";"); //$NON-NLS-1$
 				List<Image> images = new ArrayList<>();