[pgpool-committers: 10121] pgpool: Fix resource leaks in watchdog.c.

[Tatsuo Ishii]

Fix resource leaks in watchdog.c.

These leaks were mostly brought in by commit 65dbbe7a0 "Add IPv6
support for hostname and heartbeat_hostname parameter."  Since the
commit was only for master branch, no backpatch is necessary.

Per Coverity (CID 1559737 and CID 1559734).

Branch
------
master

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=8ce32bc4371ca2a0f1b5ed3b13526553b98adda9

Modified Files
--------------
src/watchdog/watchdog.c | 40 +++++++++++++++++++++++++++++++---------
1 file changed, 31 insertions(+), 9 deletions(-)