rscan usage error - Line #712

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@1214 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server-2.0/lib/xcat/plugins/blade.pm

@@ -709,7 +709,7 @@ sub rscan {
   if ( !GetOptions(\%opt,qw(V|Verbose w x z))){
     return(1,usage());
   }
-  if (@ARGV) {
+  if ( defined(@ARGV[0]) ) {
     return(1,usage("Invalid argument: @ARGV\n"));
   }
   if (exists($opt{x}) and exists($opt{z})) {