r1288 merge:

fix segfault when event port returns POLLERR without POLLIN or POLLOUT
diff --git a/src/event/modules/ngx_eventport_module.c b/src/event/modules/ngx_eventport_module.c
index bd046ed..0abb2ee 100644
--- a/src/event/modules/ngx_eventport_module.c
+++ b/src/event/modules/ngx_eventport_module.c
@@ -514,6 +514,10 @@
 
                 } else {
                     rev->handler(rev);
+
+                    if (ev->closed) {
+                        continue;
+                    }
                 }
 
                 if (rev->accept) {