fix shadowed variable warning.

mailnews/base/src/nsMsgAppCore.cpp

@@ -629,7 +629,7 @@ nsMsgAppCore::CopyMessages(nsIDOMXULElement *srcFolderElement, nsIDOMXULElement
 		nsCopyMessageStreamListener* copyStreamListener = new nsCopyMessageStreamListener(srcFolder, dstFolder, nsnull);
 
 		nsIMsgMessageService * messageService = nsnull;
-		nsresult rv = GetMessageServiceFromURI(uri, &messageService);
+		rv = GetMessageServiceFromURI(uri, &messageService);
 
 		if (NS_SUCCEEDED(rv) && messageService)
 		{

mailnews/base/src/nsUrlListenerManager.cpp

@@ -63,7 +63,6 @@ nsresult nsUrlListenerManager::UnRegisterListener(nsIUrlListener * aUrlListener)
 nsresult nsUrlListenerManager::BroadcastChange(nsIURL * aUrl, nsUrlNotifyType notification, nsresult aErrorCode)
 {
 	NS_PRECONDITION(aUrl, "we shouldn't get OnStartRunningUrl for the url listener manager without a url...");
-	nsIUrlListener * listener = nsnull;
 	nsresult rv = NS_OK;
 
 	if (m_listeners && aUrl)