Patch by Alexander Kuznetsov
Reported by Chidozie Oku
From patch description:
"
Handler is now released on every exit from File Selector. For example pressing ctrl-up and then changing editor type
to another also releases the handler.
When an area is changed from SPACE_FILE, ED_fileselect_exit is called for clean up. It takes function of freeing folder
list and files (before it was done in cancel or exec functions) because they must be released on every exit anyway.
op!=null means cancel or exec was not executed so a handler was not released. ED_fileselect_exit then releases the handler
without changing screens.
"
Thanks!
Nathan Letwory
a06c46d8dd