From c9832d43748b2e9575ffb53b76f3bc76cfc7aed0 Mon Sep 17 00:00:00 2001
From: Ran Benita <ran234@gmail.com>
Date: Fri, 28 Apr 2017 09:33:25 +0300
Subject: [PATCH] test/interactive-x11: handle NULL from xcb_wait_for_event

Can happen in cases like:
- There was an error between the error check and the call.
- The internal poll() fails.

Signed-off-by: Ran Benita <ran234@gmail.com>
---
 test/interactive-x11.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/interactive-x11.c b/test/interactive-x11.c
index bb641dd..9829cf3 100644
--- a/test/interactive-x11.c
+++ b/test/interactive-x11.c
@@ -276,6 +276,10 @@ loop(xcb_connection_t *conn, struct keyboard *kbd)
         }
 
         event = xcb_wait_for_event(conn);
+        if (!event) {
+            continue;
+        }
+
         process_event(event, kbd);
         free(event);
     }