nsMessenger::Redo()
nsMessenger::Redo(nsIMsgWindow *msgWindow)
nsMessenger::Redo(){  nsresult rv = NS_OK;  if (mTxnMgr)  {    PRInt32 numTxn = 0;    rv = mTxnMgr->GetNumberOfRedoItems(&numTxn);    if (NS_SUCCEEDED(rv) && numTxn > 0)      mTxnMgr->Redo();  }  return rv;}