Description:
------------
In php_x509_fingerprint_match() and its caller, due to its logic the "SSL context" option 'peer_fingerprint' may pass and establish the connection with or without a warning, if set to an invalid value (specifically data type).

Test script:
---------------
<?php

error_reporting(E_ALL);

// pass, warning
var_dump(stream_socket_client("ssl://php.net:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, stream_context_create([
        'ssl' => ['verify_peer'=> false, 'peer_fingerprint' => true]
        ])));

// pass, no warning
var_dump(stream_socket_client("ssl://php.net:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, stream_context_create([
        'ssl' => ['verify_peer'=> false, 'peer_fingerprint' => null]
        ])));

// pass, no warning
var_dump(stream_socket_client("ssl://php.net:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, stream_context_create([
        'ssl' => ['verify_peer'=> false, 'peer_fingerprint' => []]
        ])));

// pass, no warning
var_dump(stream_socket_client("ssl://php.net:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, stream_context_create([
        'ssl' => ['verify_peer'=> false, 'peer_fingerprint' => ['foo']]
        ])));


Expected result:
----------------
All these connections should fail or at least give a warning.

Actual result:
--------------
Connection is established in all cases...