[468991] NPE fix - check for null delta

plugins/org.eclipse.jst.j2ee/j2eeplugin/org/eclipse/jst/j2ee/internal/deployables/J2EEDeployableFactory.java

diff --git a/plugins/org.eclipse.jst.j2ee/j2eeplugin/org/eclipse/jst/j2ee/internal/deployables/J2EEDeployableFactory.java b/plugins/org.eclipse.jst.j2ee/j2eeplugin/org/eclipse/jst/j2ee/internal/deployables/J2EEDeployableFactory.java
index ec8ba73..15895d0 100644
--- a/plugins/org.eclipse.jst.j2ee/j2eeplugin/org/eclipse/jst/j2ee/internal/deployables/J2EEDeployableFactory.java
+++ b/plugins/org.eclipse.jst.j2ee/j2eeplugin/org/eclipse/jst/j2ee/internal/deployables/J2EEDeployableFactory.java
@@ -294,7 +294,7 @@
 
 	public void resourceChanged(IResourceChangeEvent event) {
 		// If it is only a marker change, ignore the change 
-		if(event.getDelta().getFlags() == IResourceDelta.MARKERS) {
+		if(event.getDelta() == null || event.getDelta().getFlags() == IResourceDelta.MARKERS) {
 			return;
 		}
 		cleanAllDelegates();