[DoctrineBridge] Treat firstResult === 0 like null

Author: derrabus

src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php

@@ -50,7 +50,7 @@ public function getEntities()
      */
     public function getEntitiesByIds($identifier, array $values)
     {
-        if (null !== $this->queryBuilder->getMaxResults() || null !== $this->queryBuilder->getFirstResult()) {
+        if (null !== $this->queryBuilder->getMaxResults() || 0 < (int) $this->queryBuilder->getFirstResult()) {
             // an offset or a limit would apply on results including the where clause with submitted id values
             // that could make invalid choices valid
             $choices = [];