Method json_write_comma

crawl-ref/source/tileweb.cc:2602–2610

}

void TilesFramework::json_write_comma()
{
    if (m_msg_buf.empty())
        return;
    char last = m_msg_buf[m_msg_buf.size() - 1];
    if (last == '{' || last == '[' || last == ',' || last == ':')
        return;
    write_message(",");
}

void TilesFramework::json_write_icons(const set<tileidx_t> &icons)
{