[FFmpeg-cvslog] doc/examples/muxing: Remove unnecessary ret

[Jun Zhao]

ffmpeg | branch: master | Jun Zhao <barryjzhao at tencent.com> | Sat Oct 22 10:46:03 2022 +0800| [3497362be18ec1f7b1e675209da2a9e5b4a585f7] | committer: Jun Zhao

doc/examples/muxing: Remove unnecessary ret

Remove unnecessary ret and make the code more compact

Signed-off-by: Jun Zhao <barryjzhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3497362be18ec1f7b1e675209da2a9e5b4a585f7
---

 doc/examples/muxing.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/doc/examples/muxing.c b/doc/examples/muxing.c
index 3acb778322..cd997d5431 100644
--- a/doc/examples/muxing.c
+++ b/doc/examples/muxing.c
@@ -219,8 +219,6 @@ static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
                                   int sample_rate, int nb_samples)
 {
     AVFrame *frame = av_frame_alloc();
-    int ret;
-
     if (!frame) {
         fprintf(stderr, "Error allocating an audio frame\n");
         exit(1);
@@ -232,8 +230,7 @@ static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
     frame->nb_samples = nb_samples;
 
     if (nb_samples) {
-        ret = av_frame_get_buffer(frame, 0);
-        if (ret < 0) {
+        if (av_frame_get_buffer(frame, 0) < 0) {
             fprintf(stderr, "Error allocating an audio buffer\n");
             exit(1);
         }