Merge pull request #962 from netiul/master

Stop executeDeletions when there is nothing to to delete anymore

lib/Doctrine/ORM/UnitOfWork.php

@@ -373,7 +373,7 @@ public function commit($entity = null)
 
             // Entity deletions come last and need to be in reverse commit order
             if ($this->entityDeletions) {
-                for ($count = count($commitOrder), $i = $count - 1; $i >= 0; --$i) {
+                for ($count = count($commitOrder), $i = $count - 1; $i >= 0 && $this->entityDeletions; --$i) {
                     $this->executeDeletions($commitOrder[$i]);
                 }
             }