bugfix: invalid conf struct name

Author: HanadaLee

filter/ngx_http_zstd_filter_module.c

@@ -154,14 +154,14 @@ static ngx_command_t  ngx_http_zstd_filter_commands[] = {
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
       ngx_conf_set_size_slot,
       NGX_HTTP_LOC_CONF_OFFSET,
-      offsetof(ngx_http_zstd_conf_t, max_length),
+      offsetof(ngx_http_zstd_loc_conf_t, max_length),
       NULL },
 
     { ngx_string("zstd_bypass"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
       ngx_http_set_predicate_slot,
       NGX_HTTP_LOC_CONF_OFFSET,
-      offsetof(ngx_http_zstd_conf_t, bypass),
+      offsetof(ngx_http_zstd_loc_conf_t, bypass),
       NULL },
 
     { ngx_string("zstd_dict_file"),