Use NIL rather than NULL to represent an empty list.

Just to be tidy.

Amit Langote

Discussion: http://postgr.es/m/9297f80f-e4ab-7dda-33d4-8580bab6d634@lab.ntt.co.jp

diff --git a/src/backend/utils/cache/evtcache.c b/src/backend/utils/cache/evtcache.c
index 54ddc55f76af26b3147260f0ee3cffece6a0b353..6faf4ae354c051ef8700123dfb64b3e3c8d82b47 100644 (file)
--- a/src/backend/utils/cache/evtcache.c
+++ b/src/backend/utils/cache/evtcache.c
@@ -68,7 +68,7 @@ EventCacheLookup(EventTriggerEvent event)
        if (EventTriggerCacheState != ETCS_VALID)
                BuildEventTriggerCache();
        entry = hash_search(EventTriggerCache, &event, HASH_FIND, NULL);
-       return entry != NULL ? entry->triggerlist : NULL;
+       return entry != NULL ? entry->triggerlist : NIL;
 }
 
 /*