[pgpool-committers: 2105] pgpool: Back porting coverity issues fix patch from master branch.

[Muhammad Usama]

Back porting coverity issues fix patch from master branch.

Fix coverity issue:1111394 Dereference after null check
Fix coverity issue:1111398 Dereference after null check
Fix coverity issue:1111399 Explicit null dereferenced
Fix coverity issue:1111400 Dereference after null check
Fix coverity issue:1111401 Explicit null dereferenced

Branch
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V3_2_STABLE

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=33cc391a0a0c774abfba1b1f11a60a54921f1fcd

Modified Files
--------------
pool_memqcache.c        |    2 +-
pool_process_query.c    |   16 +++++++++-------
pool_rewrite_outfuncs.c |    2 +-
pool_rewrite_query.c    |    2 +-
pool_select_walker.c    |    2 ++
5 files changed, 14 insertions(+), 10 deletions(-)