fix segfault: ngx_http_upstream_cleanup() cleans r->cleanup, the bug had been introduced in r3419
fix segfault: ngx_http_upstream_cleanup() cleans r->cleanup,
the bug had been introduced in r3419

hy0kl/nginx,firebase/nginx,firebase/nginx,firebase/nginx,hy0kl/nginx,firebase/nginx,hy0kl/nginx