GeoIP: avoid closing random file descriptors

Previously there were three different pipe validity checks:
PID != WS_INVALID_PID, PID != 0 and stdin != 0. This resulted in
using/closing file descriptors which might be owned by something else.

When no GeoIP databases are defined, mmdb_resolve_stop would be called
to close the pipe and set PID to WS_INVALID_PID. stdin is however not
cleared and future invocations would try to close the previous fd.

Change-Id: I1d15da29208efb41098ee6a4edeeabf61f84c2b3
Fixes: v2.5.1rc0-466-ga1da75c554 ("Transition from GeoIP Legacy to MaxMindDB.")
Reviewed-on: https://code.wireshark.org/review/26391
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Gerald Combs <gerald@wireshark.org>

0 files changed, 0 insertions, 0 deletions