avcodec/dirac_dwt: Fix multiple overflows in 9/7 lifting
Fixes: runtime error: signed integer overflow:
1073901567 +
1073901567 cannot be represented in type 'int'
Fixes: 3124/clusterfuzz-testcase-minimized-
454643435752652
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
f71cd44147e7a914f80fcfacca46c9e7b0374362)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>