appropriately detect index delete failure

servers/slapd/back-bdb/delete.c

@@ -356,8 +356,7 @@ retry:	/* transaction retry */
 	}
 
 return_results:
-	send_ldap_result( conn, op, LDAP_SUCCESS,
-		NULL, text, NULL, NULL );
+	send_ldap_result( conn, op, rc, NULL, text, NULL, NULL );
 
 	if(rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
 		ldap_pvt_thread_yield();

servers/slapd/back-bdb/index.c

@@ -363,10 +363,10 @@ bdb_index_entry(
 		if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
 			LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
-				"index_entry: success\n" ));
+				"index_entry: failure (%d)\n", rc ));
 #else
 			Debug( LDAP_DEBUG_TRACE,
-				"<= index_entry_%s( %ld, \"%s\" ) success\n",
+				"<= index_entry_%s( %ld, \"%s\" ) failure\n",
 				op == SLAP_INDEX_ADD_OP ? "add" : "del",
 				(long) e->e_id, e->e_dn );
 #endif