Fix some near-bugs related to ResourceOwner function arguments

These functions took a ResourceOwner argument, but only checked if it
was NULL, and then used CurrentResourceOwner for the actual work.
Surely the intention was to use the passed-in resource owner. All
current callers passed CurrentResourceOwner or NULL, so this has no
consequences at the moment, but it's an accident waiting to happen for
future caller and extensions.

Author: Matthias van de Meent <boekewurm+postgres@gmail.com>
Discussion: https://www.postgresql.org/message-id/CAEze2Whnfv8VuRZaohE-Af+GxBA1SNfD_rXfm84Jv-958UCcJA@mail.gmail.com
Backpatch-through: 17

src/backend/storage/aio/aio.c

@@ -53,7 +53,7 @@
 
 static inline void pgaio_io_update_state(PgAioHandle *ioh, PgAioHandleState new_state);
 static void pgaio_io_reclaim(PgAioHandle *ioh);
-static void pgaio_io_resowner_register(PgAioHandle *ioh);
+static void pgaio_io_resowner_register(PgAioHandle *ioh, struct ResourceOwnerData *resowner);
 static void pgaio_io_wait_for_free(void);
 static PgAioHandle *pgaio_io_from_wref(PgAioWaitRef *iow, uint64 *ref_generation);
 static const char *pgaio_io_state_get_name(PgAioHandleState s);
@@ -217,7 +217,7 @@ pgaio_io_acquire_nb(struct ResourceOwnerData *resowner, PgAioReturn *ret)
 		pgaio_my_backend->handed_out_io = ioh;
 
 		if (resowner)
-			pgaio_io_resowner_register(ioh);
+			pgaio_io_resowner_register(ioh, resowner);
 
 		if (ret)
 		{
@@ -406,13 +406,13 @@ pgaio_io_update_state(PgAioHandle *ioh, PgAioHandleState new_state)
 }
 
 static void
-pgaio_io_resowner_register(PgAioHandle *ioh)
+pgaio_io_resowner_register(PgAioHandle *ioh, struct ResourceOwnerData *resowner)
 {
 	Assert(!ioh->resowner);
-	Assert(CurrentResourceOwner);
+	Assert(resowner);
 
-	ResourceOwnerRememberAioHandle(CurrentResourceOwner, &ioh->resowner_node);
-	ioh->resowner = CurrentResourceOwner;
+	ResourceOwnerRememberAioHandle(resowner, &ioh->resowner_node);
+	ioh->resowner = resowner;
 }
 
 /*

src/backend/utils/cache/catcache.c

@@ -1661,7 +1661,7 @@ ReleaseCatCacheWithOwner(HeapTuple tuple, ResourceOwner resowner)
 
 	ct->refcount--;
 	if (resowner)
-		ResourceOwnerForgetCatCacheRef(CurrentResourceOwner, &ct->tuple);
+		ResourceOwnerForgetCatCacheRef(resowner, &ct->tuple);
 
 	if (
 #ifndef CATCACHE_FORCE_RELEASE
@@ -2103,7 +2103,7 @@ ReleaseCatCacheListWithOwner(CatCList *list, ResourceOwner resowner)
 	Assert(list->refcount > 0);
 	list->refcount--;
 	if (resowner)
-		ResourceOwnerForgetCatCacheListRef(CurrentResourceOwner, list);
+		ResourceOwnerForgetCatCacheListRef(resowner, list);
 
 	if (
 #ifndef CATCACHE_FORCE_RELEASE