libmakepkg/strip: don't re-add the same debug source multiple times

It's either a waste of work, or triggers edge cases in some packages
(like coreutils-8.31) where the source file is readonly and cp gets a
permission denied error trying to overwrite it with an identical copy of
itself.

Also while we are at it, make the variable names be something readable,
because I could barely tell what this was doing while editing it.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>
(cherry picked from commit 3674144a74cfe897ec3ff46c18681df293290caa)

0 files changed, 0 insertions, 0 deletions