Fixed use after free in api error handling

util/api.c

@@ -49,13 +49,13 @@ int ping_job(int id, char *state, char *status, ...)
 	curl_easy_setopt(curl, CURLOPT_URL, url);
 	ret = curl_easy_perform(curl);
 	free(p);
-	free(url);
 	curl_easy_cleanup(curl);
 	if (ret)
 	{
 		fprintf(stderr, "API call to \"%s\" failed: %s\n", url, curl_easy_strerror(ret));
+		free(url);
 		return -1;
 	}
-	else
+	free(url);
 	return 0;
 }