From 9f4dfe77cbd813403d694998e19fe7c1dccf4a35 Mon Sep 17 00:00:00 2001
From: Seth Hillbrand <seth@kipro-pcb.com>
Date: Fri, 14 Jun 2024 14:59:14 -0700
Subject: [PATCH] Freeze the adapter to avoid invalid deref

GTK tries to get the parent item of selected elements when unselecting.
If we don't freeze, we run the risk of crashing if a selected item is
removed before being unselected.  This causes a wx warning but a) this
is suppressed in release and b) warning message is better than crash.
See next commit for fix to avoid common case of the error
---
 common/widgets/lib_tree.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/widgets/lib_tree.cpp b/common/widgets/lib_tree.cpp
index 80f64eb1eb..25f08c02a5 100644
--- a/common/widgets/lib_tree.cpp
+++ b/common/widgets/lib_tree.cpp
@@ -354,7 +354,9 @@ void LIB_TREE::CenterLibId( const LIB_ID& aLibId )
 
 void LIB_TREE::Unselect()
 {
+    m_tree_ctrl->Freeze();
     m_tree_ctrl->UnselectAll();
+    m_tree_ctrl->Thaw();
 }