fix defect 3513526

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.7@12098 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/lib/perl/xCAT/SvrUtils.pm

@@ -264,6 +264,7 @@ sub getsynclistfile()
     my %osimage_syncfile = ();
     my @profiles = ();
 
+  if ($nodes) {
     # get the profile attributes for the nodes
     my $nodetype_t = xCAT::Table->new('nodetype');
     unless ($nodetype_t) {
@@ -285,6 +286,7 @@ sub getsynclistfile()
         push @profiles, $profile;
       }
     }
+   }
 
     # get the syncfiles base on the osimage
     my $osimage_t = xCAT::Table->new('osimage');