gpg: Fix the fix out-of-bounds access.
* g10/tofu.c (build_conflict_set): Revert to int* and fix calloc.
The original code used an int array and thus better keep that and do
not limit it to 128 entries.
- Fixes-commit: 3b5b94ceab7c0ed9501c5cf54b4efa17fcd7300a
- Signed-off-by: Werner Koch <wk@gnupg.org>