Merge branch '4.3' into 4.4

* 4.3:
  fixed CS
  fixed CS
  fixed CS
  Do not log or call the proxy function when the locale is the same
  Added missing required dependencies on psr/cache and psr/container in symfony/cache-contracts and symfony/service-contracts respectively.
  [HttpClient] fix closing debug stream prematurely
  [Mailer] made code more robust
  Restore compatibility with php 5.5
  fixed sender/recipients in SMTP Envelope
  collect called listeners information only once
  [HttpKernel] Remove TestEventDispatcher.

Author: fabpot

Crawler.php

@@ -566,7 +566,7 @@ public function text(/* $default = null */)
     {
         if (!$this->nodes) {
             if (0 < \func_num_args()) {
-                return \func_get_arg(0);
+                return func_get_arg(0);
             }
 
             throw new \InvalidArgumentException('The current node list is empty.');
@@ -588,7 +588,7 @@ public function html(/* $default = null */)
     {
         if (!$this->nodes) {
             if (0 < \func_num_args()) {
-                return \func_get_arg(0);
+                return func_get_arg(0);
             }
 
             throw new \InvalidArgumentException('The current node list is empty.');
@@ -1220,7 +1220,7 @@ private function createSubCrawler($nodes)
      */
     private function createCssSelectorConverter(): CssSelectorConverter
     {
-        if (!\class_exists(CssSelectorConverter::class)) {
+        if (!class_exists(CssSelectorConverter::class)) {
             throw new \LogicException('To filter with a CSS selector, install the CssSelector component ("composer require symfony/css-selector"). Or use filterXpath instead.');
         }
 

Test/Constraint/CrawlerSelectorTextContains.php

@@ -45,7 +45,7 @@ protected function matches($crawler): bool
             return false;
         }
 
-        return false !== \mb_strpos($crawler->text(), $this->expectedText);
+        return false !== mb_strpos($crawler->text(), $this->expectedText);
     }
 
     /**