Correct mistaken variable prefix in optimization work

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.7@12650 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/Table.pm

@@ -2957,7 +2957,7 @@ sub getAllNodeAttribs
     $query = $self->{dbh}->prepare($qstring);
     $query->execute();
     xCAT::NodeRange::retain_cache(1);
-    unless (%options{prefetchcache}) {
+    unless ($options{prefetchcache}) {
     $self->{_use_cache} = 0;
     $self->{nodelist}->{_use_cache}=0;
     $self->_clear_cache();