avcodec/shorten: remove useless if condition and comment, reindent

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavcodec/shorten.c

@@ -445,7 +445,6 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
     }
 
     /* append current packet data to bitstream buffer */
-    if (1 && s->max_framesize) { //FIXME truncated
     buf_size       = FFMIN(buf_size, s->max_framesize - s->bitstream_size);
     input_buf_size = buf_size;
 
@@ -468,7 +467,6 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
         *got_frame_ptr = 0;
         return input_buf_size;
     }
-    }
     /* init and position bitstream reader */
     if ((ret = init_get_bits8(&s->gb, buf, buf_size)) < 0)
         return ret;