[pgpool-committers: 6520] pgpool: Fix child process segfault after reload if "health_check_databa

[Bo Peng]

Fix child process segfault after reload if "health_check_database" is empty.

per bug571.

Branch
------
V4_0_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=21d620df10fc5627ef7ecffaa1a2eabba711e29e

Modified Files
--------------
src/main/health_check.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)