disable pair event on POLLREMOVE

src/event/modules/ngx_devpoll_module.c

diff --git a/src/event/modules/ngx_devpoll_module.c b/src/event/modules/ngx_devpoll_module.c
index be523ad..48815b4 100644
--- a/src/event/modules/ngx_devpoll_module.c
+++ b/src/event/modules/ngx_devpoll_module.c
@@ -255,6 +255,12 @@
     ev->active = 0;
 
     if (flags & NGX_CLOSE_EVENT) {
+        e = (event == POLLIN) ? c->write : c->read;
+
+        if (e) {
+            e->active = 0;
+        }
+
         return NGX_OK;
     }