optim :)

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4949 b3059339-0415-0410-9bf9-f77b7e298cf2

libmpcodecs/vd_qtrpza.c

@@ -60,7 +60,7 @@ static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
     }
     
     qt_decode_rpza(data, len, mpi->planes[0], sh->disp_w, sh->disp_h,
-	((mpi->imgfmt&255)+7)/8);
+	mpi->bpp/8);
     
     return mpi;
 }