[Bridge/Twig] Simplify dumping snippet

Author: nicolas-grekas

Extension/DumpExtension.php

@@ -69,16 +69,11 @@ public function dump(\Twig_Environment $env, $context)
         }
 
         $dump = fopen('php://memory', 'r+b');
-        $prevOutput = $this->dumper->setOutput($dump);
 
         foreach ($vars as $value) {
-            $this->dumper->dump($this->cloner->cloneVar($value));
+            $this->dumper->dump($this->cloner->cloneVar($value), $dump);
         }
 
-        $this->dumper->setOutput($prevOutput);
-
-        rewind($dump);
-
-        return stream_get_contents($dump);
+        return stream_get_contents($dump, -1, 0);
     }
 }

composer.json

@@ -33,7 +33,7 @@
         "symfony/security-acl": "~2.8|~3.0",
         "symfony/stopwatch": "~2.8|~3.0",
         "symfony/console": "~2.8|~3.0",
-        "symfony/var-dumper": "~2.8.9|~3.0.9|~3.1.3|~3.2",
+        "symfony/var-dumper": "~2.8.10|~3.1.4|~3.2",
         "symfony/expression-language": "~2.8|~3.0"
     },
     "suggest": {