Use different error condition in socket test

The previously used error does not occur on FreeBSD and instead
causes the operation to time out.

Also clean up the test a bit. And make sure it actually tests
something -- the point is that socket_last_error() should be 0
after socket_clear_error(). It's kind of pointless if the test
uses a wildcard for the final result instead.

Author: nikic

ext/sockets/tests/socket_clear_error.phpt

@@ -7,25 +7,19 @@ marcosptf - <[email protected]> - #phparty7 - @phpsp - novatec/2015 - sao p
 if (!extension_loaded('sockets')) {
   die('SKIP sockets extension not available.');
 }
-if(substr(PHP_OS, 0, 3) == 'WIN' ) {
-    die('skip windows only test');
+if (substr(PHP_OS, 0, 3) == 'WIN' ) {
+    die('skip non-windows only test');
 }
 ?>
 --FILE--
 <?php
 $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
-$socketConn = socket_connect($socket, "127.0.0.1", 21248);
+socket_set_option($socket, -1, -1, -1);
 var_dump(socket_last_error($socket));
 socket_clear_error($socket);
 var_dump(socket_last_error($socket));
 ?>
---CLEAN--
-<?php
-socket_close($socket);
-unset($socket);
-unset($socketConn);
-?>
 --EXPECTF--
-Warning: socket_connect(): unable to connect [%d]: Connection refused in %s on line %d
-int(%d)
+Warning: socket_set_option(): Unable to set socket option [%s]: %s in %s on line %d
 int(%d)
+int(0)