pgsql: Make recovery_target_action = pause work.

Make recovery_target_action = pause work.

Previously even if recovery_target_action was set to pause and
the recovery target was reached, the recovery could never be paused.
Because the setting of pause was *always* overridden with that of
shutdown unexpectedly. This override is valid and intentional
if hot_standby is not enabled because there is no way to resume
the paused recovery in this case and the setting of pause is
completely useless. But not if hot_standby is enabled.

This patch changes the code so that the setting of pause is overridden
with that of shutdown only when hot_standby is not enabled.

Bug reported by Andres Freund

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/85d0e661aae656d3ec710dab24f883c4b4ef90da

Modified Files
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src/backend/access/transam/xlog.c |    4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)