ansi: remove misplaced return

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/ansi.c

@@ -372,7 +372,6 @@ static int decode_frame(AVCodecContext *avctx,
             } else {
                 s->state = STATE_NORMAL;
                 draw_char(avctx, 0x1B);
-                    return -1;
                 continue;
             }
             break;