JBListTable: prevent a memory leak

A memory leak occurring when the following is true:
1) JBListTable object was created but never added
2) It's onRemoveDisposable was not registered as a child of another disposable

platform/platform-impl/src/com/intellij/util/ui/table/JBListTable.java

@@ -246,6 +246,12 @@ public abstract class JBListTable {
         return editor.getTableCellEditorComponent(this, value, isSelected, row, column);
       }
 
+      @Override
+      public void addNotify() {
+        super.addNotify();
+        Disposer.register(myOnRemoveDisposable, myRowResizeAnimator);
+      }
+
       @Override
       public void removeNotify() {
         super.removeNotify();
@@ -254,7 +260,6 @@ public abstract class JBListTable {
     };
     mainTable.setStriped(true);
     myRowResizeAnimator = new RowResizeAnimator(mainTable);
-    Disposer.register(myOnRemoveDisposable, myRowResizeAnimator);
   }
 
   public void stopEditing() {