update: whitespace and line length cleanups.

This should contain no functional modifications.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
Acked-by: Adrien 'neox' Bourmault <neox@gnu.org>

update

@@ -69,7 +69,6 @@ mode="${1}"
 [ "${mode}" = help ] && help && exit 0
 
 if [ $# -gt 1 ]; then
-
 	option="${2}"
 	shift 2
 
@@ -89,7 +88,8 @@ if [ $# -gt 1 ]; then
 				"${update}"/"${mode}"/"${option}" $@
 			else
 				help
-    				die "Invalid option for '${mode}'. See './update ${mode} list'."
+				die "Invalid option for '${mode}'." \
+				    " See './update ${mode} list'."
 			fi
 		else
 			help