Bug resulted in rare incorrect chroma encoding
/* Avoid writing a delta quant if we have an empty i16x16 block, e.g. in a completely flat background area */
if( h->mb.i_type == I_16x16 && !h->mb.cbp[h->mb.i_mb_xy] )
{
-#ifndef RD_SKIP_BS
+#ifndef RDO_SKIP_BS
h->mb.i_qp = h->mb.i_last_qp;
#endif
i_dqp = 0;
if( h->mb.i_type == I_16x16 && !(h->mb.i_cbp_luma | h->mb.i_cbp_chroma)
&& !array_non_zero(h->dct.luma16x16_dc) )
{
-#ifndef RD_SKIP_BS
+#ifndef RDO_SKIP_BS
h->mb.i_qp = h->mb.i_last_qp;
#endif
i_dqp = 0;