Add in missing return on validation/db write failure

Templates/controller.pm.tem

@@ -175,6 +175,7 @@ sub do_update {
 						${prefix}_data  => \%${prefix}_data
 					);
 					$c->render(template => "${lcPackageName}");	
+					return
 				} else {
 					$c->stash( success => $c->l('${panel} panel action was successful')); #A bit bland - edit it in the lex file
 				}