multi: formatting and comment fixes

macaroons/constraints.go

@@ -229,7 +229,6 @@ func GetCustomCaveatCondition(mac *macaroon.Macaroon,
 		"%s %s ", CondLndCustom, customCaveatName,
 	))
 	for _, caveat := range mac.Caveats() {
-
 		// The caveat id has a format of
 		// "lnd-custom [custom-caveat-name] [custom-caveat-condition]"
 		// and we only want the condition part. If we match the prefix