import re-fix of ITS#5121

CHANGES

@@ -6,9 +6,10 @@ OpenLDAP 2.4.6 Engineering
 	Fixed slapd alock_close with Quick mode (ITS#5129)
 	Fixed slapd ordered values add normalization issue (ITS#5136)
 	Fixed slapd-bdb/hdb suffix logging (ITS#5128)
+	Fixed slapd-bdb/hdb IDL LRU handling (ITS#5121)
 	Fixed slapd-ldap SASL idassert w/o authcId
-	Fixed slapd-meta conn caching on bind failure (ITS#5154)
 	Fixed slapd-meta leak when binding as rootdn (ITS#5155)
+	Fixed slapd-meta conn caching on bind failure (ITS#5154)
 	Fixed slapo-chain double-free (ITS#5137)
 	Fixed slapo-dynlist entry release (ITS#5135)
 	Fixed slapo-rwm modlist handling (ITS#5124)

servers/slapd/back-bdb/idl.c

@@ -379,7 +379,7 @@ bdb_idl_cache_put(
 	if ( ++bdb->bi_idl_cache_size > bdb->bi_idl_cache_max_size ) {
 		int i;
 		ee = bdb->bi_idl_lru_tail;
-		for ( i = 0; i < 10; i++, ee = eprev ) {
+		for ( i = 0; ee != NULL && i < 10; i++, ee = eprev ) {
 			eprev = ee->idl_lru_prev;
 			if ( eprev == ee ) {
 				eprev = NULL;