Merge branch '3.0'

* 3.0: (22 commits)
  [Yaml] Fix tests on PHP 7.0.2
  [FrameworkBundle] Don't log twice with the error handler
  [2.7] Workaround https://bugs.php.net/63206
  [2.3] Workaround https://bugs.php.net/63206
  Add closing parenthesis
  [Serializer] Unset object_to_populate after using it
  Typo fix
  [WebProfiler] Fixed sf-minitoolbar height
  [HttpFoundation] Fixed Request HTTP_USER_AGENT on 3.X versions
  [2.3] Static Code Analysis for Components
  [Serializer] Use $context['cache_key'] to enhance caching
  Removed non-existent directory from composer autoload
  Fixed erroneous deprecation notice for extended Interfaces
  [Routing] cs fix
  Added support \IteratorAggregate for UniqueEntityValidator
  Update AbstractChoiceListTest.php
  [Serializer] Allow to use proxies in object_to_populate
  Fix #17306 Paths with % in it are note allowed (like urlencoded)
  Use proper class to fetch $versionStrategy property
  Added sort order SORT_STRING for params in UriSigner
  ...

 Conflicts:
	src/Symfony/Component/Serializer/Normalizer/ObjectNormalizer.php

Author: dunglas

Firewall/DigestAuthenticationListener.php

@@ -170,10 +170,8 @@ public function validateAndDecode($entryPointKey, $expectedRealm)
             throw new BadCredentialsException(sprintf('Missing mandatory digest value; received header "%s" (%s)', $this->header, implode(', ', $keys)));
         }
 
-        if ('auth' === $this->elements['qop']) {
-            if (!isset($this->elements['nc']) || !isset($this->elements['cnonce'])) {
-                throw new BadCredentialsException(sprintf('Missing mandatory digest value; received header "%s"', $this->header));
-            }
+        if ('auth' === $this->elements['qop'] && !isset($this->elements['nc'], $this->elements['cnonce'])) {
+            throw new BadCredentialsException(sprintf('Missing mandatory digest value; received header "%s"', $this->header));
         }
 
         if ($expectedRealm !== $this->elements['realm']) {