update ip2long_varation2 test to skip for AIX, see bug #72973

Author: krakjoe

ext/standard/tests/network/ip2long_variation2.phpt

@@ -2,6 +2,7 @@
 Test ip2long() function : usage variation 2, 32 bit
 --SKIPIF--
 <?php if(PHP_INT_SIZE != 4) {die('skip 32 bit only');} ?>
+<?php if (strtolower(substr(PHP_OS, 0, 3)) == 'aix') {die('skip not for AIX');} ?>
 --FILE--
 <?php
 /* Prototype  : int ip2long(string ip_address)