fix signature

ext/json/json.c

@@ -664,7 +664,7 @@ again:
 }
 /* }}} */
 
-PHP_JSON_API void php_json_decode_ex(zval *return_value, char *str, size_t str_len, size_t options, zend_long depth TSRMLS_DC) /* {{{ */
+PHP_JSON_API void php_json_decode_ex(zval *return_value, char *str, size_t str_len, zend_long options, zend_long depth TSRMLS_DC) /* {{{ */
 {
 	size_t utf16_len;
 	unsigned short *utf16;

ext/json/php_json.h

@@ -50,7 +50,7 @@ ZEND_END_MODULE_GLOBALS(json)
 #endif
 
 PHP_JSON_API void php_json_encode(smart_str *buf, zval *val, int options TSRMLS_DC);
-PHP_JSON_API void php_json_decode_ex(zval *return_value, char *str, size_t str_len, int options, zend_long depth TSRMLS_DC);
+PHP_JSON_API void php_json_decode_ex(zval *return_value, char *str, size_t str_len, zend_long options, zend_long depth TSRMLS_DC);
 extern PHP_JSON_API zend_class_entry *php_json_serializable_ce;