[FFmpeg-cvslog] libavformat/mov.c: Fix "statement will never be executed" warning

[zhaozhenghang]

ffmpeg | branch: master | zhaozhenghang <15083277223 at 163.com> | Thu Jul 31 09:27:07 2025 +0800| [eade338656b00b4264f69755803e987864ba83a0] | committer: Zhao Zhili

libavformat/mov.c: Fix "statement will never be executed" warning

That occurs when H261, H263, and MPEG4 decoders are disabled.

Signed-off-by: zhaozhenghang <15083277223 at 163.com>
Signed-off-by: Zhao Zhili <zhilizhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=eade338656b00b4264f69755803e987864ba83a0
---

 libavformat/mov.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index 55b0950b5e..5ff9b5ba1b 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -5225,18 +5225,14 @@ static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     }
 
     switch (st->codecpar->codec_id) {
-#if CONFIG_H261_DECODER
     case AV_CODEC_ID_H261:
-#endif
-#if CONFIG_H263_DECODER
     case AV_CODEC_ID_H263:
-#endif
-#if CONFIG_MPEG4_DECODER
     case AV_CODEC_ID_MPEG4:
-#endif
         st->codecpar->width = 0; /* let decoder init width/height */
         st->codecpar->height= 0;
         break;
+    default:
+        break;
     }
 
     // If the duration of the mp3 packets is not constant, then they could need a parser