ext/curl: Remove unused return_value parameter from _php_curl_multi_setopt

[arshidkv12]

-static bool _php_curl_multi_setopt(php_curlm *mh, zend_long option, zval *zvalue, zval *return_value) /* {{{ */
+static bool _php_curl_multi_setopt(php_curlm *mh, zend_long option, zval *zvalue) /* {{{ */
 {
        CURLMcode error = CURLM_OK;
 
@@ -521,7 +521,7 @@ PHP_FUNCTION(curl_multi_setopt)
 
        mh = Z_CURL_MULTI_P(z_mh);
 
-       RETURN_BOOL(_php_curl_multi_setopt(mh, options, zvalue, return_value));

[ndossche]

Thanks