[Bf-blender-cvs] [efcf36f2e97] blender-v3.0-release: Fix T92532: Missing null checks in IDPropertyManager.update_from

[Hans Goudey]

Commit: efcf36f2e9773f30fa6d4cce8fd0e793b9694b78
Author: Hans Goudey
Date:   Tue Nov 2 07:59:10 2021 -0500
Branches: blender-v3.0-release
https://developer.blender.org/rBefcf36f2e9773f30fa6d4cce8fd0e793b9694b78

Fix T92532: Missing null checks in IDPropertyManager.update_from

Calling it with a None argument, or no arguments, or with a property
that is missing UI data for some reason would fail. There is no
particular reason why ensuring those things don't happen is helpful,
so just add null checks for safety.

Differential Revision: https://developer.blender.org/D13024

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

M	source/blender/python/generic/idprop_py_ui_api.c

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

diff --git a/source/blender/python/generic/idprop_py_ui_api.c b/source/blender/python/generic/idprop_py_ui_api.c
index 7827bd48dfe..37ba27f7315 100644
--- a/source/blender/python/generic/idprop_py_ui_api.c
+++ b/source/blender/python/generic/idprop_py_ui_api.c
@@ -622,7 +622,9 @@ static PyObject *BPy_IDPropertyUIManager_update_from(BPy_IDPropertyUIManager *se
     IDP_ui_data_free(property);
   }
 
-  property->ui_data = IDP_ui_data_copy(ui_manager_src->property);
+  if (ui_manager_src->property && ui_manager_src->property->ui_data) {
+    property->ui_data = IDP_ui_data_copy(ui_manager_src->property);
+  }
 
   Py_RETURN_NONE;
 }