avformat/wtvdec: Check size in SBE2_STREAM_DESC_EVENT / stream2_guid
Fixes: signed integer overflow:
539033600 - -
1910497124 cannot be represented in type 'int'
Fixes: 30928/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-
5922630966312960
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit
1f74661543c0c336e88846f90608fda7bd12deac)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>