xbps-src: Use @Gottox way to read path names

common/hooks/post-install/03-remove-empty-dirs.sh

@@ -1,8 +1,7 @@
 # This hooks removes empty dirs and warns about them.
 
 hook() {
-	for f in $(find ${PKGDESTDIR} -type d -empty|sort -r|tr " " "|"); do
-		f="${f//|/ }"
+	find "${PKGDESTDIR}" -type d -empty|sort -r|while read f; do
 		_dir="${f##${PKGDESTDIR}}"
 		[ -z "${_dir}" ] && continue
 		rmdir --ignore-fail-on-non-empty -p "$f" &>/dev/null