fixed bug 12131 -- message counts not updated after a move/copy; call UpdateFolder() after move/copy is done; r=bienvenu

mailnews/imap/src/nsImapMailFolder.cpp

@@ -2550,6 +2550,7 @@ nsImapMailFolder::OnStopRunningUrl(nsIURI *aUrl, nsresult aExitCode)
                     }
                     ClearCopyState(aExitCode);
                 }
+                UpdateFolder();
                 break;
             case nsIImapUrl::nsImapAppendMsgFromFile:
             case nsIImapUrl::nsImapAppendDraftFromFile:
@@ -2563,6 +2564,7 @@ nsImapMailFolder::OnStopRunningUrl(nsIURI *aUrl, nsresult aExitCode)
                         ClearCopyState(aExitCode);
                     }
                 }
+                UpdateFolder();
                 break;
             default:
                 break;