From 4fc585418bd557a0920556c76be4c1b3dda62219 Mon Sep 17 00:00:00 2001
From: Po Lu <luangruo@yahoo.com>
Date: Thu, 17 Mar 2022 07:17:13 +0000
Subject: [PATCH] Fix mouse movement on Haiku

* src/haiku_support.cc (MouseMoved): Make sure grab view exists
before comparing against it.
---
 src/haiku_support.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/haiku_support.cc b/src/haiku_support.cc
index f8acd2a4eca..8c45a7adcb1 100644
--- a/src/haiku_support.cc
+++ b/src/haiku_support.cc
@@ -1459,7 +1459,7 @@ public:
     if (!grab_view_locker.Lock ())
       gui_abort ("Couldn't lock grab view locker");
 
-    if (this != grab_view)
+    if (grab_view && this != grab_view)
       {
 	grab_view_locker.Unlock ();
 	return;
-- 
2.39.5