MFH: Add test for the timeout inside shutdown function

tests/lang/045.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Timeout again inside register_shutdown_function
+--FILE--
+<?php
+set_time_limit(1);
+register_shutdown_function("plop");
+
+function plop() {
+    $ts = time();
+    while(true) {
+        if ((time()-$ts) > 2) {
+            echo "Failed!";
+            break;
+        }
+    }
+}
+plop();
+?>
+===DONE===
+--EXPECTF--
+Fatal error: Maximum execution time of 1 second exceeded in %s on line %d
+
+Fatal error: Maximum execution time of 1 second exceeded in %s on line %d