travis-ci: avoided using the contributor's branch of lua-nginx-module.

Thanks Thibault for the report.

Author: spacewander

.travis.yml

@@ -60,7 +60,7 @@ install:
   - git clone https://github.com/openresty/openresty.git ../openresty
   - git clone https://github.com/openresty/openresty-devel-utils.git
   - git clone https://github.com/simpl/ngx_devel_kit.git ../ndk-nginx-module
-  - git clone -b proc_wait_timeout_fix https://github.com/spacewander/lua-nginx-module.git ../lua-nginx-module
+  - git clone https://github.com/openresty/lua-nginx-module.git ../lua-nginx-module
   - git clone https://github.com/openresty/no-pool-nginx.git ../no-pool-nginx
   - git clone https://github.com/openresty/echo-nginx-module.git ../echo-nginx-module
   - git clone https://github.com/openresty/lua-resty-lrucache.git