Quiet this warning for the one known case that it fires since we do a passable job of handling this case anyway. bug 341320, r+sr=sicking

content/html/document/src/nsHTMLContentSink.cpp

@@ -1193,7 +1193,7 @@ SinkContext::CloseContainer(const nsHTMLTag aTag, PRBool aMalformed)
   --mStackPos;
   nsHTMLTag nodeType = mStack[mStackPos].mType;
 
-  NS_ASSERTION(nodeType == aTag,
+  NS_ASSERTION(nodeType == eHTMLTag_form || nodeType == aTag,
                "Tag mismatch.  Closing tag on wrong context or something?");
 
   nsGenericHTMLElement* content = mStack[mStackPos].mContent;