mjpeg: remove pointless braces around block of code

Signed-off-by: NMans Rullgard <mans@mansr.com>

libavcodec/mjpegdec.c

@@ -1520,7 +1520,6 @@ eoi_parser:
                         av_log(avctx, AV_LOG_WARNING, "Found EOI before any SOF, ignoring\n");
                         break;
                     }
-                    {
                     if (s->interlaced) {
                         s->bottom_field ^= 1;
                         /* if not bottom field, do not output image yet */
@@ -1541,7 +1540,6 @@ eoi_parser:
                     }
 
                     goto the_end;
-                    }
                     break;
                 case SOS:
                     if (!s->got_picture) {