build search expression only if search was submitted

lib/NGCP/Panel/Controller/Root.pm

@@ -107,8 +107,9 @@ sub ajax_process_resultset :Private {
     
     my $totalRecords = $rs->count;
 
-    my @searchdata = map{ +{ $_ => { like => '%'.$sSearch.'%' } } } @$columns[@$searchable];
-    $rs = $rs->search(\@searchdata);
+    if ($sSearch) {
+        $rs = $rs->search([ map{ +{ $_ => { like => '%'.$sSearch.'%' } } } @$columns[@$searchable] ]);
+    }
 
     my $totalDisplayRecords = $rs->count;