Description:
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Creating references to socket resources causes these resources to no longer work in stream_select.

Test script:
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$r = [stream_socket_server("tcp://127.0.0.1:0", $errno, $errStr)];
$w = NULL;
$e = NULL;

// Without this line, all is well:
$dummy =& $r[0];

print stream_select($r, $w, $e, 3);


Expected result:
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The script should hang for 3s. This is indeed what happens with PHP 5.

Actual result:
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PHP Warning:  stream_select(): supplied argument is not a valid stream resource in test.php on line 10
PHP Warning:  stream_select(): No stream arrays were passed in test.php on line 10