Bug 330167, clear lazy state when removing template-built node from document, r+sr=bz

content/xul/templates/src/nsXULTemplateBuilder.cpp

@@ -901,6 +901,14 @@ nsXULTemplateBuilder::ContentRemoved(nsIDocument* aDocument,
         if (xuldoc)
             xuldoc->SetTemplateBuilderFor(mRoot, nsnull);
 
+        // clear the lazy state when removing content so that it will be
+        // regenerated again if the content is reinserted
+        nsXULElement *xulcontent = nsXULElement::FromContent(mRoot);
+        if (xulcontent) {
+            xulcontent->ClearLazyState(nsXULElement::eTemplateContentsBuilt);
+            xulcontent->ClearLazyState(nsXULElement::eContainerContentsBuilt);
+        }
+
         mDB = nsnull;
         mCompDB = nsnull;
         mRoot = nsnull;