pgsql: Ensure walsenders can be SIGTERMed while in non-walsender code

Ensure walsenders can be SIGTERMed while in non-walsender code

In oder to exit on SIGTERM when in non-walsender code,
such as do_pg_stop_backup(), we need to set the interrupt
variables that are used there, and not just the walsender
local ones.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/7aeff9f4a4e57dca5727828bf95f12cf63003270

Modified Files
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src/backend/replication/walsender.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)