[fix] fix a bug introduced in last PR.

Author: winshining

README.md

@@ -5,9 +5,11 @@ This module is based on Nginx upload module (v 2.2.0) http://www.grid.net.ru/ngi
 Since it seems the author has not maintained that module. I changed some codes that can be installed with latest nginx.
 
 - note
+
 When compiled with nginx-1.11.2 and later versions, if https is needed, please add configuration option `--with-http_ssl_module`.
 
 - install
+
 ./configure --add-module={module_dir} && make && make install
 
 - conf

ngx_http_upload_module.c

@@ -2541,7 +2541,7 @@ ngx_http_upload_merge_ranges(ngx_http_upload_ctx_t *u, ngx_http_upload_range_t *
         int res = ftruncate(state_file->fd, out_buf.file_pos);
         if(res == EBADF || res == EINVAL) {
             rc = NGX_ERROR;
-            go failed;
+            goto failed;
         }
     }