[pgpool-committers: 1799] pgpool: Fix to ignore a harmless error code when executing ifconfig com

[Yugo Nagata]

Fix to ignore a harmless error code when executing ifconfig command

When executing command such as ifconfig or ping by execv() in a forked
child proess, wait() can fails with an error code ECHILD, although the
process exists exactly, if SIGCHLD is set to SIG_IGN in Linux. We should
ignore this and not treat as failure of the command.

Branch
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V3_3_STABLE

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=11122e47902487a7a9b61a498c113dc4df3483a5

Modified Files
--------------
watchdog/wd_if.c   |    4 ++--
watchdog/wd_ping.c |    2 +-
2 files changed, 3 insertions(+), 3 deletions(-)