Fix video output when not scaling

Signed-off-by: Jean-Paul Saman <jean-paul.saman@m2x.nl>

modules/codec/davinci/viddec.c

@@ -1003,7 +1003,7 @@ static picture_t *DecodeVideoBlockInner( decoder_t *p_dec, block_t **pp_block, i
 
                 /* draw a line */
                 memcpy( &p_sys->p_fb_map[i*i_line_len + i_sideborder],
-                        &p_sys->p_yuyv[i*i_vidw],
+                        &p_sys->p_yuyv[(i-i_edgeborder)*i_vidw],
                         i_vidw
                     );