From 29b402f376716ba77f254eac4a214cda52e60608 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Fri, 25 Jun 2010 11:41:39 +0000
Subject: [PATCH] Fix #22618: Deleting an object doesnt remove its self from
 pinned buttons

Clear pin flag and pin ID in unlink_object if pinid points to unlinking object
---
 source/blender/blenkernel/intern/object.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 10c94ed1eeb..4e90387a2c3 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -652,6 +652,14 @@ void unlink_object(Scene *scene, Object *ob)
 						}
 					}
 				}
+				else if(sl->spacetype==SPACE_BUTS) {
+					SpaceButs *sbuts= (SpaceButs *)sl;
+
+					if(sbuts->pinid==(ID *)ob) {
+						sbuts->flag&= ~SB_PIN_CONTEXT;
+						sbuts->pinid= NULL;
+					}
+				}
 			}
 
 			sa= sa->next;