Description:
------------
See code sample and backtrace below.

Reproduce code:
---------------
Server: 

$provider = new OAuthProvider();
$provider->consumerHandler(array($this, 'lookupConsumer'));
$provider->timestampNonceHandler(array($this, 'timestampNonceChecker'));
$provider->tokenHandler(array($this, 'tokenHandler'));
$provider->setRequestTokenPath('/oauth/request_token');
$provider->checkOAuthRequest();

function lookupConsumer($provider)
{
	$provider->consumer_secret = 'cons_secret';
	return OAUTH_OK;
}
function timestampNonceChecker($provider)
{
	return OAUTH_OK;
}
function tokenHandler($provider)
{
	return OAUTH_TOKEN_REJECTED;
}



CLIENT:
$oauth = new OAuth('cons_key', 'cons_secret', OAUTH_SIG_METHOD_HMACSHA1, OAUTH_AUTH_TYPE_URI);
$request_token_info = $oauth->getRequestToken('http://mysite.local/oauth/request_token');


Actual result:
--------------
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000014
0x00000001011cc984 in convert_to_long ()


#0  0x00000001011cc984 in convert_to_long ()
#1  0x00000001007f0908 in zim_oauthprovider_checkOAuthRequest ()
#2  0x00000001011fbc5a in zend_do_fcall_common_helper_SPEC ()
#3  0x00000001011f7ffb in execute ()
#4  0x00000001011d3a1b in zend_execute_scripts ()
#5  0x000000010117c6b2 in php_execute_script ()
#6  0x0000000101262b1c in php_handler ()
#7  0x00000001000013ab in ap_run_handler ()
#8  0x000000010000322a in ap_invoke_handler ()
#9  0x0000000100024af4 in ap_internal_redirect ()
#10 0x00000001007c415d in handler_redirect ()
#11 0x00000001000013ab in ap_run_handler ()
#12 0x000000010000322a in ap_invoke_handler ()
#13 0x0000000100024cb8 in ap_process_request ()
#14 0x0000000100021908 in ap_process_http_connection ()
#15 0x000000010000eafb in ap_run_process_connection ()
#16 0x000000010002956d in child_main ()
#17 0x000000010002978f in make_child ()
#18 0x000000010002a419 in ap_mpm_run ()
#19 0x0000000100007d68 in main ()