[261946] Duplicate build patch error when external dependent-module has deploy-path of /

plugins/org.eclipse.jst.j2ee/common/org/eclipse/jst/j2ee/internal/common/classpath/J2EEComponentClasspathContainer.java

diff --git a/plugins/org.eclipse.jst.j2ee/common/org/eclipse/jst/j2ee/internal/common/classpath/J2EEComponentClasspathContainer.java b/plugins/org.eclipse.jst.j2ee/common/org/eclipse/jst/j2ee/internal/common/classpath/J2EEComponentClasspathContainer.java
index 6d1eb26..20b085a 100644
--- a/plugins/org.eclipse.jst.j2ee/common/org/eclipse/jst/j2ee/internal/common/classpath/J2EEComponentClasspathContainer.java
+++ b/plugins/org.eclipse.jst.j2ee/common/org/eclipse/jst/j2ee/internal/common/classpath/J2EEComponentClasspathContainer.java
@@ -292,7 +292,11 @@
 				            attrs = dec.getExtraAttributes();
 				        }
 			        
-				        entriesList.add(JavaCore.newLibraryEntry( lastUpdate.paths[i], srcpath, srcrootpath, access, attrs, exportEntries ));
+//				        entriesList.add(JavaCore.newLibraryEntry( lastUpdate.paths[i], srcpath, srcrootpath, access, attrs, exportEntries ));
+				        IClasspathEntry newEntry = JavaCore.newLibraryEntry( lastUpdate.paths[i], srcpath, srcrootpath, access, attrs, exportEntries ); 
+				        entriesList.add(newEntry);
+				        existingEntries.add(newEntry);
+				        
 					}
 				} else {
 					IProject project = comp.getProject();