Currently, the "New features" list unconditionally ends with a "None"
point, which makes no sense. The original author probably meant to check
whether the file is empty, so remove the else clause, and add the check
for emptiness.
Cc: mesa-stable
Signed-off-by: Konstantin Kharlamov <Hi-Angel@yandex.ru>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20241>