Fixup 9028cc6

We forgot to change innodb_autoextend_increment from ULONG to
UINT (always 32-bit) in Mariabackup.

extra/mariabackup/xtrabackup.cc

@@ -1255,7 +1255,7 @@ struct my_option xb_server_options[] =
    "Data file autoextend increment in megabytes",
    (G_PTR*) &sys_tablespace_auto_extend_increment,
    (G_PTR*) &sys_tablespace_auto_extend_increment,
-   0, GET_ULONG, REQUIRED_ARG, 8L, 1L, 1000L, 0, 1L, 0},
+   0, GET_UINT, REQUIRED_ARG, 8, 1, 1000, 0, 1, 0},
   {"innodb_data_file_path", OPT_INNODB_DATA_FILE_PATH,
    "Path to individual files and their sizes.", &innobase_data_file_path,
    &innobase_data_file_path, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},