? parch_85316.diff
Index: main/src/org/netbeans/modules/subversion/ui/diff/MultiDiffView.java
===================================================================
RCS file: /cvs/subversion/main/src/org/netbeans/modules/subversion/ui/diff/MultiDiffView.java,v
retrieving revision 1.17
diff -u -r1.17 MultiDiffView.java
--- main/src/org/netbeans/modules/subversion/ui/diff/MultiDiffView.java	1 Jul 2006 09:12:18 -0000	1.17
+++ main/src/org/netbeans/modules/subversion/ui/diff/MultiDiffView.java	22 Sep 2006 12:06:26 -0000
@@ -64,7 +64,7 @@
     /** currentDifference property holder */
     private int currentDifference;
 
-    private final PropertyChangeSupport support = new PropertyChangeSupport(this);
+    private PropertyChangeSupport support;
 
     /** Container that defines width. */
     private final Component parent;
@@ -273,7 +273,10 @@
         return views[0].getToolBar();
     }
 
-    public void addPropertyChangeListener(PropertyChangeListener l) {
+    public synchronized void addPropertyChangeListener(PropertyChangeListener l) {
+        if (support == null) {
+            support = new PropertyChangeSupport(this);
+        }
         support.addPropertyChangeListener(l);
     }