pgsql: Fix code to properly pull out shared memory key now that the

Fix code to properly pull out shared memory key now that the
postmaster.pid file is larger than in previous major versions.
This is a bug introduced when I added lines to the file recently.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=postgresql.git;a=commitdiff;h=bada44a2a2ac6f33bd355c9acc0dfaa3d4890e54

Modified Files
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src/backend/utils/init/miscinit.c | 39 ++++++++++++++++++++----------------
1 files changed, 22 insertions(+), 17 deletions(-)