Do not add root prefix twice when checking database files

When checking .INSTALL and .CHANGELOG files in the mtree file, we need to find
the path they are stored in the local database. This was appending the root
prefix twice as alpm_option_get_dbpath already returns the absolute path to
the database.

While fixing that issue I added checks that the paths for the database files
were not longer than PATH_MAX.

Fixes FS#48563.

Signed-off-by: Allan McRae <allan@archlinux.org>
(cherry picked from commit 2ee1706a72858ea365c0e7a1a72d92ef2dae2f75)

0 files changed, 0 insertions, 0 deletions