Optimize openssl memory leak test

Just do one call and check whether memory usage changes. Looping
this 100000 times is extremely slow with debug builds of openssl.

Author: nikic

ext/openssl/tests/bug79145.phpt

@@ -2,10 +2,6 @@
 Bug #79145 (openssl memory leak)
 --EXTENSIONS--
 openssl
---SKIPIF--
-<?php
-if (getenv('SKIP_SLOW_TESTS')) die('skip slow test');
-?>
 --FILE--
 <?php
 $b = '-----BEGIN PUBLIC KEY-----
@@ -15,13 +11,14 @@ j85Q5OliVxOdB1LoTOsOmfFf/fdvpU3DsOWsDKlVrL41MHxXorwrwOiys/r/gv2d
 C9C4JmhTOjBVAK8SewIDAQAC
 -----END PUBLIC KEY-----';
 
+$a = openssl_get_publickey($b);
+@openssl_free_key($a);
+
 $start = memory_get_usage(true);
-for ($i = 0; $i < 100000; $i++) {
-    $a = openssl_get_publickey($b);
-    @openssl_free_key($a);
-}
+$a = openssl_get_publickey($b);
+@openssl_free_key($a);
 $end = memory_get_usage(true);
-var_dump($end <= 1.1 * $start);
+var_dump($end == $start);
 ?>
 --EXPECT--
 bool(true)