pg_autovacuum another one line patch

On the performance list, Gaetano Mendola noticed that pg_autovacuum
doesn't perform an fflush after the last log_entry call before sleeping.
This makes tail -f very annoying to watch.

Attached is a patch to add that one line.

Matthew


*** pg_autovacuum.c.orig    2003-12-08 00:30:08.000000000 -0500
--- pg_autovacuum.c    2003-12-08 00:31:00.000000000 -0500
***************
*** 1161,1166 ****
--- 1161,1167 ----
               "%i All DBs checked in: %.0f usec, will sleep for %i secs.",
                      loops, diff, sleep_secs);
              log_entry(logbuffer);
+             fflush(LOGOUTPUT);
          }

          sleep(sleep_secs);        /* Larger Pause between outer loops */