set listen configuration to default server,
this fixes the case, when default server is not the first one

src/http/ngx_http.c

diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index 4cea282..492cfa0 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -1158,6 +1158,7 @@
 
                         in_addr[a].core_srv_conf = cscfp[s];
                         in_addr[a].default_server = 1;
+                        in_addr[a].listen_conf = &listen[l].conf;
                     }
 
                     goto found;