[241294] NPE guard for null properties
diff --git a/plugins/org.eclipse.jst.server.generic.core/src/org/eclipse/jst/server/generic/internal/xml/Resolver.java b/plugins/org.eclipse.jst.server.generic.core/src/org/eclipse/jst/server/generic/internal/xml/Resolver.java
index fa71e33..26eacc9 100644
--- a/plugins/org.eclipse.jst.server.generic.core/src/org/eclipse/jst/server/generic/internal/xml/Resolver.java
+++ b/plugins/org.eclipse.jst.server.generic.core/src/org/eclipse/jst/server/generic/internal/xml/Resolver.java
@@ -96,6 +96,7 @@
 	}
 
 	private int skipToProperty(String str,HashMap cache) {
+		if (str == null )return -1;
 		int start = -1; 
 		int end =  0;
 		String key=""; //$NON-NLS-1$