[FFmpeg-cvslog] avcodec/vorbis: 1 << 31 > int32_t::max(), so use 1u << 31 instead.

[Dale Curtis]

ffmpeg | branch: release/3.4 | Dale Curtis <dalecurtis at chromium.org> | Wed Nov 22 10:58:39 2017 -0800| [23319f77645d7041fde3e33d981886bff52d2e47] | committer: Michael Niedermayer

avcodec/vorbis: 1 << 31 > int32_t::max(), so use 1u << 31 instead.

Signed-off-by: Dale Curtis <dalecurtis at chromium.org>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 9648cc6d7fdbb0a260bed1e3e23300569cff9579)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=23319f77645d7041fde3e33d981886bff52d2e47
---

 libavcodec/vorbis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vorbis.c b/libavcodec/vorbis.c
index 399020eec5..f710c23450 100644
--- a/libavcodec/vorbis.c
+++ b/libavcodec/vorbis.c
@@ -91,7 +91,7 @@ int ff_vorbis_len2vlc(uint8_t *bits, uint32_t *codes, unsigned num)
         exit_at_level[i] = 0;
         // construct code (append 0s to end) and introduce new exits
         for (j = i + 1 ;j <= bits[p]; ++j)
-            exit_at_level[j] = code + (1 << (j - 1));
+            exit_at_level[j] = code + (1u << (j - 1));
         codes[p] = code;
     }