Allow func() func().

Update gofmt test script.

R=rsc
CC=golang-dev
https://golang.org/cl/195044

src/cmd/gofmt/test.sh

@@ -41,7 +41,7 @@ apply1() {
 	bug014.go | bug050.go |  bug068.go |  bug083.go | bug088.go | \
 	bug106.go | bug121.go | bug125.go | bug133.go | bug160.go | \
 	bug163.go | bug166.go | bug169.go | bug217.go | bug222.go | \
-	bug226.go | bug228.go ) ;;
+	bug226.go | bug228.go | bug248.go ) ;;
 	* ) "$1" "$2"; count "$F";;
 	esac
 }

src/pkg/go/parser/parser.go

@@ -677,7 +677,7 @@ func (p *parser) parseResult(scope *ast.Scope) []*ast.Field {
 	var results []*ast.Field
 	if p.tok == token.LPAREN {
 		results = p.parseParameters(scope, false)
-	} else if p.tok != token.FUNC {
+	} else {
 		typ := p.tryType()
 		if typ != nil {
 			results = make([]*ast.Field, 1)

src/pkg/go/parser/parser_test.go

@@ -34,7 +34,7 @@ var validPrograms = []interface{}{
 	`package main; func main() { if f(T{}) {} }` + "\n",
 	`package main; func main() { _ = (<-chan int)(x) }` + "\n",
 	`package main; func main() { _ = (<-chan <-chan int)(x) }` + "\n",
-	`package main; func f(func() (func() int))` + "\n",
+	`package main; func f(func() func() func())` + "\n",
 }