ITS#6012

CHANGES

@@ -16,6 +16,7 @@ OpenLDAP 2.4.16 Engineering
 	Fixed slapd syncrepl skipped entries with MMR (ITS#5988)
 	Fixed slapd-bdb/hdb cachesize handling (ITS#5860)
 	Fixed slapd-bdb/hdb with slapcat with empty dn (ITS#6006)
+	Fixed slapd-bdb/hdb with NULL transactions (ITS#6012)
 	Fixed slapd-ldap incorrect referral handling (ITS#6003,ITS#5916)
 	Fixed slapd-ldap/meta with broken AD results (ITS#5977)
 	Fixed slapd-ldap/meta with invalid attrs again (ITS#5959)

servers/slapd/back-bdb/cache.c

@@ -1482,7 +1482,7 @@ bdb_reader_free( void *key, void *data )
 	/* DB_ENV *env = key; */
 	DB_TXN *txn = data;
 
-	TXN_ABORT( txn );
+	if ( txn ) TXN_ABORT( txn );
 }
 
 /* free up any keys used by the main thread */