Update ext/pdo_firebird/tests/bug_76448.phpt

Co-authored-by: Christoph M. Becker <[email protected]>

Author: ndossche

ext/pdo_firebird/tests/bug_76448.phpt

@@ -7,7 +7,7 @@ sockets
 A bug in firebird causes a memory leak when calling `isc_attach_database()`.
 See https://github.com/FirebirdSQL/firebird/issues/7849
 --SKIPIF--
-<?php if (PHP_INT_SIZE != 8) die("skip: 64-bit only"); ?>
+<?php if (PHP_INT_SIZE != 8) die("skip 64-bit only"); ?>
 --FILE--
 <?php
 require_once "payload_server.inc";