Commit: 4559229163a513541913ab1f20fbc440ac136658
Author: Julian Eisel
Date:   Wed Jul 27 19:45:43 2016 +0200
Branches: master
https://developer.blender.org/rB4559229163a513541913ab1f20fbc440ac136658

Fix memory leak when closing Blender with operator popup open

Steps to reproduce:
* Default startup.blend
* RMB-Click on "Cube" item in outliner
* Select Remap Users
* Close Blender using window 'x' button

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

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 1170320..79831ce 100644
--- a/source/blender/editors/interface/interface_handlers.c
+++ b/source/blender/editors/interface/interface_handlers.c
@@ -10156,6 +10156,10 @@ static void ui_popup_handler_remove(bContext *C, void 
*userdata)
 {
        uiPopupBlockHandle *menu = userdata;
 
+       if (menu->cancel_func) {
+               menu->cancel_func(C, menu->popup_arg);
+       }
+
        /* free menu block if window is closed for some reason */
        ui_popup_block_free(C, menu);

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