Fix #108745: Crash in debug build when deleting object

`totitem_added` should be used instead to add `RNA_enum_item_end`

Pull Request: https://projects.blender.org/blender/blender/pulls/108762

source/blender/makesrna/intern/rna_space.c

@@ -2066,7 +2066,7 @@ static const EnumPropertyItem *rna_SpaceProperties_context_itemf(bContext *UNUSE
     }
   }
 
-  RNA_enum_item_end(&item, &totitem);
+  RNA_enum_item_end(&item, &totitem_added);
   *r_free = true;
 
   return item;