Merge branch '5.1' into 5.x

Author: derrabus

Tests/ErrorProcessInitiator.php

@@ -16,7 +16,7 @@
 
 require \dirname(__DIR__).'/vendor/autoload.php';
 
-list('e' => $php) = getopt('e:') + ['e' => 'php'];
+['e' => $php] = getopt('e:') + ['e' => 'php'];
 
 try {
     $process = new Process("exec $php -r \"echo 'ready'; trigger_error('error', E_USER_ERROR);\"");