Andrew Gregory authored Jan 06, 2014 and Allan McRae committed Jan 30, 2014

_alpm_resolvedeps resets pm_errno to 0 by calling alpm_checkdeps.
Whenever the last call succeeded, pm_errno was not properly set,
preventing pacman from properly handling the error and leaking
additional memory.  We know pm_errno should be ALPM_ERR_UNSATISFIED_DEPS
if resolvedeps has failed, so just set it manually.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>