chore: CS fixes

Author: keradus

Tests/SignalListener.php

@@ -9,7 +9,10 @@
  * file that was distributed with this source code.
  */
 
-pcntl_signal(\SIGUSR1, function () { echo 'SIGUSR1'; exit; });
+pcntl_signal(\SIGUSR1, function () {
+    echo 'SIGUSR1';
+    exit;
+});
 
 echo 'Caught ';