waldump: fix use-after-free in search_directory().
After closedir() dirent->d_name is not valid anymore. As there alerady are a
few places relying on the limited lifetime of pg_waldump, do so here as well,
and just pg_strdup() the string.
The bug was introduced in fc49e24fa69a.
Found by UBSan, run locally.
Backpatch: 11-, like fc49e24fa69 itself.
Branch
------
REL_11_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/7d935bdf7af71aaa1654366b9fd051581660326a
Modified Files
--------------
src/bin/pg_waldump/pg_waldump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)