remove extra comma to reduce warnings on Macintosh compiler

webshell/public/nsILinkHandler.h

@@ -33,7 +33,7 @@ struct nsGUIEvent;
 enum nsLinkState {
   eLinkState_Unvisited  = 0,
   eLinkState_Visited    = 1, 
-  eLinkState_OutOfDate  = 2,  // visited, but the cache is stale
+  eLinkState_OutOfDate  = 2   // visited, but the cache is stale
 };
 
 // XXX Verb to use for link actuation. These are the verbs specified