paccache: ensure seen/seenarch vars are set

Doesn't do a whole lot of good to compare against values that are never
set. Fixes bug where -vvv output wasn't grouping packages together
properly.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

contrib/paccache.in

@@ -154,6 +154,7 @@ summarize() {
 				if (( verbose >= 3 )); then
 					[[ $pkg =~ $pkg_re ]] && name=${BASH_REMATCH[1]} arch=${BASH_REMATCH[2]}
 					if [[ -z $seen || $seenarch != "$arch" || $seen != "$name" ]]; then
+						seen=$name seenarch=$arch
 						printf '%s (%s):\n' "$name" "$arch"
 					fi
 					printf '  %s\n' "$pkg"