avcodec/mpegvideo_enc: Remove always-false checks

In case "!direct" we are not reusing the input buffers
(due to e.g. insufficient alignment), but allocating
new ones. These of course do not alias with the ones
provided by the user, so these checks are always-false.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/mpegvideo_enc.c

@@ -1172,11 +1172,6 @@ static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
             return ret;
 
         if (!direct) {
-            if (pic->f->data[0] + INPLACE_OFFSET == pic_arg->data[0] &&
-                pic->f->data[1] + INPLACE_OFFSET == pic_arg->data[1] &&
-                pic->f->data[2] + INPLACE_OFFSET == pic_arg->data[2]) {
-                // empty
-            } else {
                 int h_chroma_shift, v_chroma_shift;
                 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
                                                  &h_chroma_shift,
@@ -1221,7 +1216,6 @@ static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
                     }
                 }
                 emms_c();
-            }
         }
         ret = av_frame_copy_props(pic->f, pic_arg);
         if (ret < 0) {