remove invalid close of table on error path when tables failed to open

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@2513 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/Utils.pm

@@ -1681,8 +1681,6 @@ sub GetMasterNodeName
     {
         xCAT::MsgUtils->message('S',
                                 "Unable to open noderes or nodetype table.\n");
-        $noderestab->close;
-        $typetab->close;
         return 1;
     }
     my $sitetab = xCAT::Table->new('site');