Merge pull request #560 from octava/master

Update FormExtractor.php

Author: goetas

Translation/Extractor/File/FormExtractor.php

@@ -120,7 +120,7 @@ public function enterNode(Node $node)
 
             // look for options containing a message
             foreach ($node->items as $item) {
-                if (!$item->key instanceof Node\Scalar\String_) {
+                if (!$item || !$item->key instanceof Node\Scalar\String_) {
                     continue;
                 }
 
@@ -171,7 +171,7 @@ public function getDomain(Node $node)
         $domain = null;
 
         foreach ($node->items as $item) {
-            if (!$item->key instanceof Node\Scalar\String_) {
+            if (!$item || !$item->key instanceof Node\Scalar\String_) {
                 continue;
             }