Merge branch '4.3' into 4.4

* 4.3:
  [Messenger] add tests to FailedMessagesShowCommand
  Fix the translation commands when a template contains a syntax error
  [Security] Fix clearing remember-me cookie after deauthentication
  [Validator] Update Slovenian translations
  [Config][ReflectionClassResource] Handle parameters with undefined constant as their default values
  fix dumping number-like string parameters
  Fix CI
  [Console] Fix autocomplete multibyte input support
  [Config] don't break on virtual stack frames in ClassExistenceResource
  more robust initialization from request

Author: nicolas-grekas

RequestContext.php

@@ -57,8 +57,8 @@ public function fromRequest(Request $request)
         $this->setMethod($request->getMethod());
         $this->setHost($request->getHost());
         $this->setScheme($request->getScheme());
-        $this->setHttpPort($request->isSecure() ? $this->httpPort : $request->getPort());
-        $this->setHttpsPort($request->isSecure() ? $request->getPort() : $this->httpsPort);
+        $this->setHttpPort($request->isSecure() || null === $request->getPort() ? $this->httpPort : $request->getPort());
+        $this->setHttpsPort($request->isSecure() && null !== $request->getPort() ? $request->getPort() : $this->httpsPort);
         $this->setQueryString($request->server->get('QUERY_STRING', ''));
 
         return $this;