libmakepkg: fix reporting of invalid archive extensions in compress.sh

In commit 1825bd6716c2a51c92642e8b96beac0101e83805 this was split out
from makepkg, but the warning was not properly migrated; $ext did not
ever exist.

As a result, no matter what you did, the only possible warning was:

==> WARNING: '' is not a valid archive extension.

Fix to filter based on the presence of .tar in the argument, and
building the $ext variable for all checking and messaging purposes
within the function.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

0 files changed, 0 insertions, 0 deletions