strdup/free li->li_directory when chaning, so unmalloced version won't be freed

servers/slapd/back-ldbm/config.c

@@ -35,6 +35,8 @@ ldbm_back_db_config(
 			    fname, lineno );
 			return( 1 );
 		}
+		if ( li->li_directory )
+			free( li->li_directory );
 		li->li_directory = ch_strdup( argv[1] );
 
 		li->li_nextid_file =

servers/slapd/back-ldbm/init.c

@@ -106,7 +106,7 @@ ldbm_back_db_init(
 	li->li_mode = DEFAULT_MODE;
 
 	/* default database directory */
-	li->li_directory = DEFAULT_DB_DIRECTORY;
+	li->li_directory = ch_strdup( DEFAULT_DB_DIRECTORY );
 
 	/* always index dn, id2children, objectclass (used in some searches) */
 	argv[ 0 ] = "dn";