Bug 557690: Fix uninitialized return value in nsEditor::QueryComposition. r=roc

editor/libeditor/base/nsEditor.cpp

@@ -1972,7 +1972,6 @@ nsEditor::StopPreservingSelection()
 nsresult
 nsEditor::QueryComposition(nsTextEventReply* aReply)
 {
-  nsresult result;
   nsCOMPtr<nsISelection> selection;
   nsCOMPtr<nsISelectionController> selcon = do_QueryReferent(mSelConWeak);
   if (selcon)
@@ -2034,7 +2033,7 @@ nsEditor::QueryComposition(nsTextEventReply* aReply)
         rect.ToOutsidePixels(frame->PresContext()->AppUnitsPerDevPixel());
     }
   }
-  return result;
+  return NS_OK;
 }
 
 NS_IMETHODIMP