Fix spelling mistake.

robertmhaas · robertmhaas · commit f704f434ebbe · 2016-01-14T23:16:11.000-05:00
Same patch submitted independently by David Rowley and Peter Geoghegan.
diff --git a/contrib/pg_upgrade/controldata.c b/contrib/pg_upgrade/controldata.c
@@ -585,7 +585,7 @@ check_control_data(ControlData *oldctrl,
 
 	if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
 		pg_log(PG_FATAL,
-			   "old and new pg_controldata maximum relation segement sizes are invalid or do not match\n");
+			   "old and new pg_controldata maximum relation segment sizes are invalid or do not match\n");
 
 	if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
 		pg_log(PG_FATAL,
