make test/ken safe for optional semis

R=rsc, ken2, ken3
https://golang.org/cl/174042
diff --git a/test/ken/litfun.go b/test/ken/litfun.go
index 85b4b0a..bac2bc1 100644
--- a/test/ken/litfun.go
+++ b/test/ken/litfun.go
@@ -8,8 +8,7 @@
 package main
 
 func
-main()
-{
+main() {
 	x := func(a int)int {
 		x := func(a int)int {
 			x := func(a int)int {