[Bf-blender-cvs] [7d66925c738] master: WM: NULL check for recent tooltip change

[Campbell Barton]

Commit: 7d66925c738b5a842ed212f4755a499e6ebdf95d
Author: Campbell Barton
Date:   Thu Jan 25 21:39:04 2018 +1100
Branches: master
https://developer.blender.org/rB7d66925c738b5a842ed212f4755a499e6ebdf95d

WM: NULL check for recent tooltip change

Caused crash dragging boolean buttons.

===================================================================

M	source/blender/editors/interface/interface_handlers.c

===================================================================

diff --git a/source/blender/editors/interface/interface_handlers.c b/source/blender/editors/interface/interface_handlers.c
index 2f7359da308..47de598c028 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -7671,7 +7671,9 @@ void UI_but_tooltip_timer_remove(bContext *C, uiBut *but)
 			data->autoopentimer = NULL;
 		}
 
-		WM_tooltip_clear(C, data->window);
+		if (data->window) {
+			WM_tooltip_clear(C, data->window);
+		}
 	}
 }