From fc8cb7cd14c3184c76321237cc0d6c7d520b9268 Mon Sep 17 00:00:00 2001
From: Felix Geyer <debfx@fobos.de>
Date: Sat, 26 Sep 2015 12:26:24 +0200
Subject: [PATCH] Check if XListInputDevices returns an error.

Refs #351
---
 src/autotype/x11/AutoTypeX11.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/autotype/x11/AutoTypeX11.cpp b/src/autotype/x11/AutoTypeX11.cpp
index 9d5f7be48..06e5b68dc 100644
--- a/src/autotype/x11/AutoTypeX11.cpp
+++ b/src/autotype/x11/AutoTypeX11.cpp
@@ -547,10 +547,12 @@ int AutoTypePlatformX11::x11ErrorHandler(Display* display, XErrorEvent* error)
 
 XkbDescPtr AutoTypePlatformX11::getKeyboard()
 {
-    XDeviceInfo* devices;
     int num_devices;
     XID keyboard_id = XkbUseCoreKbd;
-    devices = XListInputDevices(m_dpy, &num_devices);
+    XDeviceInfo* devices = XListInputDevices(m_dpy, &num_devices);
+    if (!devices) {
+        return Q_NULLPTR;
+    }
 
     for (int i = 0; i < num_devices; i++) {
         if (QString(devices[i].name) == "Virtual core XTEST keyboard") {