bug in ReplicationSlotsCountDBSlots

hi,

the following fixes an obvious bug in ReplicationSlotsCountDBSlots
which prevents dropping unrelated databases.

YAMAMOTO Takashi

diff --git a/src/backend/replication/slot.c b/src/backend/replication/slot.c
index 45ed7e4..76e5573 100644
--- a/src/backend/replication/slot.c
+++ b/src/backend/replication/slot.c
@@ -727,6 +727,7 @@ ReplicationSlotsCountDBSlots(Oid dboid, int *nslots, int *nactive)

         /* not database specific, skip */
         if (s->data.database == InvalidOid)
+            continue;

         /* not our database, skip */
         if (s->data.database != dboid)