Fix "Undefined variable: ex"

core/lib/Thelia/Controller/Admin/AbstractSeoCrudController.php

@@ -168,7 +168,6 @@ abstract class AbstractSeoCrudController extends AbstractCrudController
 
         // Error (Default: false)
         $error_msg = false;
-        $ex = new \Exception();
 
         // Create the Form from the request
         $updateSeoForm = $this->getUpdateSeoForm($this->getRequest());
@@ -223,6 +222,7 @@ abstract class AbstractSeoCrudController extends AbstractCrudController
             $this->getParserContext()->addForm($changeForm);
         }
         
+        if (false !=== $error_msg) {
             $this->setupFormErrorContext(
                 $this->getTranslator()->trans("%obj SEO modification", array('%obj' => $this->objectName)),
                 $error_msg,
@@ -233,4 +233,5 @@ abstract class AbstractSeoCrudController extends AbstractCrudController
             // At this point, the form has errors, and should be redisplayed.
             return $this->renderEditionTemplate();
         }
+    }
 }