[pgpool-committers: 4189] pgpool: Fix handling of empty queries.

[Tatsuo Ishii]

Fix handling of empty queries.

When empty query (empty string or all comment query) is sent, command
complete message was returned to frontend.  This is not correct. An
empty query response should be returned to frontend.

Per bug328.

Branch
------
V3_5_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=645468eba6d721c9752b4e2d0ae8723222e79edc

Modified Files
--------------
src/protocol/CommandComplete.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)