From c2028b53d21356e012885e2cb120f0bdd1bf951c Mon Sep 17 00:00:00 2001
From: casey <casey@clapfootgames.com>
Date: Thu, 8 Oct 2020 20:13:33 -0400
Subject: [PATCH] windows: null check wsi before udp check

---
 lib/plat/windows/windows-service.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/plat/windows/windows-service.c b/lib/plat/windows/windows-service.c
index a5d193cb8..598d0f932 100644
--- a/lib/plat/windows/windows-service.c
+++ b/lib/plat/windows/windows-service.c
@@ -304,7 +304,8 @@ _lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
 			 * on the TCP connection.  But it breaks UDP, so only
 			 * do it on non-UDP.
 			 */
-			if (!wsi_from_fd(context, pfd->fd)->udp)
+			wsi = wsi_from_fd(context, pfd->fd);
+			if (wsi && !wsi->udp)
 				recv(pfd->fd, NULL, 0, 0);
 
 			lws_service_fd_tsi(context, pfd, tsi);