Thread: pgsql: Use PostmasterRandom(), not random(), for DSM control segment ID

Use PostmasterRandom(), not random(), for DSM control segment ID.

Otherwise, every startup gets the same "random" value, which is
definitely not what was intended.

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/b1aed95f52f5fea1366f4c4b3a46b5604c6ca1e3

Modified Files
--------------
src/backend/postmaster/postmaster.c | 3 +--
src/backend/storage/ipc/dsm.c       | 3 ++-
src/include/postmaster/postmaster.h | 1 +
3 files changed, 4 insertions(+), 3 deletions(-)