[FFmpeg-cvslog] avformat/jpegxl_probe: Fix potential incorrect and UB shift

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Thu Apr 28 05:07:25 2022 +0200| [3946cb02fc67a0fdd23ff9e0678b2801fe479463] | committer: Andreas Rheinhardt

avformat/jpegxl_probe: Fix potential incorrect and UB shift

Fixes Coverity issue #1504273.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3946cb02fc67a0fdd23ff9e0678b2801fe479463
---

 libavformat/jpegxl_probe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/jpegxl_probe.c b/libavformat/jpegxl_probe.c
index 924b529ad5..9cd00da194 100644
--- a/libavformat/jpegxl_probe.c
+++ b/libavformat/jpegxl_probe.c
@@ -96,10 +96,10 @@ static uint64_t jpegxl_u64(GetBitContext *gb)
         ret = jxl_bits(12);
         while (jxl_bits(1)) {
             if (shift < 60) {
-                ret |= jxl_bits(8) << shift;
+                ret |= (uint64_t)jxl_bits(8) << shift;
                 shift += 8;
             } else {
-                ret |= jxl_bits(4) << shift;
+                ret |= (uint64_t)jxl_bits(4) << shift;
                 break;
             }
         }