23089. sr=bienvenu. Do not updateMailboxinfo when imapAction is LiteSelectFolder (undo/redo)

mailnews/imap/src/nsImapProtocol.cpp

@@ -3074,6 +3074,14 @@ void nsImapProtocol::ProcessMailboxUpdate(PRBool handlePossibleUndo)
     else if (!DeathSignalReceived())
       GetServerStateParser().ResetFlagInfo(0);
 
+	if (!DeathSignalReceived())
+	{
+      nsImapAction imapAction; 
+      nsresult res = m_runningUrl->GetImapAction(&imapAction);
+	  if (NS_SUCCEEDED(res) && imapAction == nsIImapUrl::nsImapLiteSelectFolder)
+          return;
+	}
+        
     nsImapMailboxSpec *new_spec = GetServerStateParser().CreateCurrentMailboxSpec();
   if (new_spec && !DeathSignalReceived())
   {