Merge branch '3.4' into 4.4

* 3.4:
  Tweak the code to avoid fabbot false positives

Author: fabpot

Encoder/XmlEncoder.php

@@ -473,7 +473,7 @@ private function buildXml(\DOMNode $parentNode, $data, string $xmlRootNodeName =
             return $this->appendNode($parentNode, $data, 'data');
         }
 
-        throw new NotEncodableValueException(sprintf('An unexpected value could not be serialized: %s.', !\is_resource($data) ? var_export($data, true) : sprintf('%s resource', get_resource_type($data))));
+        throw new NotEncodableValueException('An unexpected value could not be serialized: '.(!\is_resource($data) ? var_export($data, true) : sprintf('%s resource', get_resource_type($data))));
     }
 
     /**

Serializer.php

@@ -173,7 +173,7 @@ public function normalize($data, $format = null, array $context = [])
             throw new NotNormalizableValueException(sprintf('Could not normalize object of type "%s", no supporting normalizer found.', \get_class($data)));
         }
 
-        throw new NotNormalizableValueException(sprintf('An unexpected value could not be normalized: %s.', !\is_resource($data) ? var_export($data, true) : sprintf('%s resource', get_resource_type($data))));
+        throw new NotNormalizableValueException('An unexpected value could not be normalized: '.(!\is_resource($data) ? var_export($data, true) : sprintf('%s resource', get_resource_type($data))));
     }
 
     /**