test frequent r->header_only before three response status

src/http/modules/ngx_http_gzip_filter_module.c

diff --git a/src/http/modules/ngx_http_gzip_filter_module.c b/src/http/modules/ngx_http_gzip_filter_module.c
index 4c0c0d2..337700c 100644
--- a/src/http/modules/ngx_http_gzip_filter_module.c
+++ b/src/http/modules/ngx_http_gzip_filter_module.c
@@ -243,10 +243,10 @@
     conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
 
     if (!conf->enable
+        || r->header_only
         || (r->headers_out.status != NGX_HTTP_OK
             && r->headers_out.status != NGX_HTTP_FORBIDDEN
             && r->headers_out.status != NGX_HTTP_NOT_FOUND)
-        || r->header_only
         || (r->headers_out.content_encoding
             && r->headers_out.content_encoding->value.len)
         || (r->headers_out.content_length_n != -1