From 90d599cac49fa08f225abc86efd58f35d497c4e5 Mon Sep 17 00:00:00 2001
From: sprunk <gnurps@o2.pl>
Date: Sat, 30 Dec 2017 16:22:29 +0100
Subject: [PATCH] Prevent dangling weak link crashes.

---
 libs/chiliui/luamenu/chili/chili/controls/control.lua | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/libs/chiliui/luamenu/chili/chili/controls/control.lua b/libs/chiliui/luamenu/chili/chili/controls/control.lua
index 664c8f4d3..1b02609e8 100644
--- a/libs/chiliui/luamenu/chili/chili/controls/control.lua
+++ b/libs/chiliui/luamenu/chili/chili/controls/control.lua
@@ -304,7 +304,7 @@ function Control:GetRelativeBox(savespace)
   end
 
   local p = self.parent
-  if (not p) then
+  if not p or not UnlinkSafe(p) then
     return t
   end
 
@@ -921,7 +921,7 @@ end
 
 
 function Control:_UpdateOwnDList()
-	if not self.parent then return end
+	if not self.parent or not UnlinkSafe(self.parent) then return end
 	if not self:IsInView() then return end
 	if not self.useDLists then return end
 
@@ -931,7 +931,7 @@ end
 
 
 function Control:_UpdateChildrenDList()
-	if not self.parent then return end
+	if not self.parent or not UnlinkSafe(self.parent) then return end
 	if not self:IsInView() then return end
 
 	if self:InheritsFrom("scrollpanel") and not self._cantUseRTT then
@@ -948,7 +948,7 @@ end
 
 
 function Control:_UpdateAllDList()
-	if not self.parent then return end
+	if not self.parent or not UnlinkSafe(self.parent) then return end
 	if not self:IsInView() then return end
 
 	local RTT = self:_CheckIfRTTisAppreciated()
@@ -1138,7 +1138,7 @@ end
 
 
 function Control:IsRectInView(x,y,w,h)
-	if (not self.parent) then
+	if not self.parent or not UnlinkSafe(self.parent) then
 		return false
 	end