Mark tests using port 64324 as conflicting

Alternatively, we could choose another port, but that likely will
conflict with some other test in the future.  The proper solution would
be to use ephemeral ports[1], but our OpenSSL `ServerClientTestCase`
does not support this yet.

[1] <6ab4e33>

Author: cmb69

ext/openssl/tests/san_ipv6_peer_matching.phpt

@@ -2,6 +2,8 @@
 IPv6 Peer verification matches SAN names
 --EXTENSIONS--
 openssl
+--CONFLICTS--
+port64324
 --SKIPIF--
 <?php
 if (!function_exists("proc_open")) die("skip no proc_open");

ext/standard/tests/streams/bug51056.phpt

@@ -1,5 +1,7 @@
 --TEST--
 Bug #51056 (fread() on blocking stream will block even if data is available)
+--CONFLICTS--
+port64324
 --FILE--
 <?php