rem: return strcmp(r1->room_name.s, r2->room_name.s);
add: return str_strcmp(&r1->room_name, &r2->room_name);
context: static int compare_location_placeid_rows(const void *v1, const void *v2){     const struct location_placeid_row *r1 = v1;     const struct location_placeid_row *r2 = v2;     return strcmp(r1->room_name.s, r2->room_name.s);}