Refactoring: incorporate do_write() into MHD_connection_handle_write()
Refactoring: incorporate do_write() into MHD_connection_handle_write()

maru/libmicrohttpd-http2,maru/libmicrohttpd-http2,maru/libmicrohttpd-http2,ghaderer/libmicrohttpd,ghaderer/libmicrohttpd,ghaderer/libmicrohttpd