Use the right non-null event variable and clean up an indentation violation. r+sr=jst

content/events/src/nsDOMTextEvent.cpp

@@ -1,4 +1,5 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 sw=2 et tw=78: */
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
@@ -58,7 +59,7 @@ nsDOMTextEvent::nsDOMTextEvent(nsPresContext* aPresContext,
   //
   // extract the IME composition string
   //
-  nsTextEvent *te = NS_STATIC_CAST(nsTextEvent*, aEvent);
+  nsTextEvent *te = NS_STATIC_CAST(nsTextEvent*, mEvent);
   mText = te->theText;
 
   //