pgsql: Fix long-standing segfault when accept() or one of the calls mad

Fix long-standing segfault when accept() or one of the calls made right
after accepting a connection fails, and the server is compiled with GSSAPI
support. Report and patch by Alexander V. Chernikov, bug #5731.

Branch
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REL8_4_STABLE

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=61ba6f4bf01305e1acdff79424e6133cf2a0b46c

Modified Files
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src/backend/postmaster/postmaster.c |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)