RFB_ENCODING_ZLIB
if (c->rc_encodings & RFB_ENCODING_ZLIB)
if (!(c->rc_encodings & RFB_ENCODING_ZLIB)) {
c->rc_encodings |= RFB_ENCODING_ZLIB;
if (c->rc_encodings & RFB_ENCODING_ZLIB) {
if (c->rc_encodings & RFB_ENCODING_ZLIB) {