[skip ci] accidentally used print() instead of die() (#13158)

Author: divinity76

ext/pcntl/tests/async_signals_2.phpt

@@ -4,7 +4,7 @@ Async signals in zend_call_function
 pcntl
 --SKIPIF--
 <?php
-if (getenv("SKIP_SLOW_TESTS")) print "skip slow test";
+if (getenv("SKIP_SLOW_TESTS")) die("skip slow test");
 ?>
 --FILE--
 <?php