Bug 155.
Fix segfaults that sometimes result the postgresql connections going away.
Check for a closed file descriptor (-1) before calling FD_ISSET
(cherry picked from commit 8cd3d07e6af3752234e781ba6f7716840b8e6eb9)

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=06953165d7b716cbcc1c74bb944394645988fa12

Modified Files
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src/slon/scheduler.c |   26 ++++++++++++++++----------
1 files changed, 16 insertions(+), 10 deletions(-)