fixed 3393278, if noderange is not empty and missed not is empty, at the meantime, the @nodes is also empty, we can make sure that no node/noderange specified in the command line

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@10316 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/Client.pm

@@ -319,6 +319,11 @@ sub plugin_command {
     unless (@nodes) {
        $req->{emptynoderange} = [1];
     }
+
+    if(@nodes == 0 ) {
+        print "No nodes or noderanges specified\n";
+        return 1;
+     }
   }
   if (@nodes) { $req->{node} = \@nodes; }
   my %unhandled_nodes;