Fix possible use-after-free when closing Blender with File Browser open

I think there wasn't actually any issue currently, but only by luck. We still
passed around and NULL-checked a pointer to freed memory (the file operator,
`SpaceFile.op`) which is easy to break and should be avoided.
Noticed while testing D8598.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_fileselect.h b/source/blender/editors/include/ED_fileselect.h
index 341f97943a5..84808416074 100644
--- a/source/blender/editors/include/ED_fileselect.h
+++ b/source/blender/editors/include/ED_fileselect.h
@@ -35,6 +35,7 @@ struct SpaceFile;
 struct bContext;
 struct bScreen;
 struct uiBlock;
+struct wmOperator;
 struct wmWindow;
 struct wmWindowManager;
 
@@ -145,6 +146,9 @@ void ED_fileselect_window_params_get(const struct wmWindow *win,
                                      int win_size[2],
                                      bool *is_maximized);
 
+struct ScrArea *ED_fileselect_handler_area_find(const struct wmWindow *win,
+                                                const struct wmOperator *file_operator);
+
 int ED_path_extension_type(const char *path);
 int ED_file_extension_icon(const char *path);