pgsql: Fix the number of lwlocks needed by the "fast path" lock patch.

Fix the number of lwlocks needed by the "fast path" lock patch. It needs
one lock per backend or auxiliary process - the need for a lock for each
aux processes was not accounted for in NumLWLocks(). No-one noticed,
because the three locks needed for the three aux processes fit into the
few extra lwlocks we allocate for 3rd party modules that don't call
RequestAddinLWLocks() (NUM_USER_DEFINED_LWLOCKS, 4 by default).

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/cbf65509bb59694412286239fe6db409060f8d69

Modified Files
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src/backend/storage/lmgr/lwlock.c |    4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)