Fixed reuseport with accept_mutex.

src/event/ngx_event.c

diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index 878372c..34a07e4 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -811,7 +811,12 @@
 
         rev->handler = ngx_event_accept;
 
-        if (ngx_use_accept_mutex) {
+        if (ngx_use_accept_mutex
+#if (NGX_HAVE_REUSEPORT)
+            && !ls[i].reuseport
+#endif
+           )
+        {
             continue;
         }