Merge branch '3.4' into 4.0

* 3.4:
  Fix tests
  PropertyInfo\DoctrineExtractor - There is bug when indexBy is meta key
  Fix PercentType error rendering.
  [minor] SCA
  [Cache] Inline some hot function calls

Author: nicolas-grekas

Mapping/Factory/LazyLoadingMetadataFactory.php

@@ -160,10 +160,6 @@ public function hasMetadataFor($value)
 
         $class = ltrim(is_object($value) ? get_class($value) : $value, '\\');
 
-        if (class_exists($class) || interface_exists($class)) {
-            return true;
-        }
-
-        return false;
+        return class_exists($class) || interface_exists($class, false);
     }
 }