cmd, pkg/go/*: fix "go vet" warnings for go/ast and go/printer

struct literals.

R=gri
CC=golang-dev
http://codereview.appspot.com/5653073

3 files changed, 11 insertions, 5 deletions

diff --git a/src/cmd/fix/httpfs.go b/src/cmd/fix/httpfs.go
index 625dd0f7d..d87b30f9d 100644
--- a/src/cmd/fix/httpfs.go
+++ b/src/cmd/fix/httpfs.go
@@ -39,7 +39,10 @@ func httpfs(f *ast.File) bool {
 		}
 		dir, prefix := call.Args[0], call.Args[1]
 		call.Args = []ast.Expr{&ast.CallExpr{
-			Fun:  &ast.SelectorExpr{ast.NewIdent("http"), ast.NewIdent("Dir")},
+			Fun: &ast.SelectorExpr{
+				X:   ast.NewIdent("http"),
+				Sel: ast.NewIdent("Dir"),
+			},
 			Args: []ast.Expr{dir},
 		}}
 		wrapInStripHandler := true
@@ -53,7 +56,10 @@ func httpfs(f *ast.File) bool {
 			call.Args = []ast.Expr{
 				prefix,
 				&ast.CallExpr{
-					Fun:  &ast.SelectorExpr{ast.NewIdent("http"), ast.NewIdent("FileServer")},
+					Fun: &ast.SelectorExpr{
+						X:   ast.NewIdent("http"),
+						Sel: ast.NewIdent("FileServer"),
+					},
 					Args: call.Args,
 				},
 			}
diff --git a/src/cmd/fix/main.go b/src/cmd/fix/main.go
index 23af42ee2..b151408d7 100644
--- a/src/cmd/fix/main.go
+++ b/src/cmd/fix/main.go
@@ -104,8 +104,8 @@ const (
 )
 
 var printConfig = &printer.Config{
-	printerMode,
-	tabWidth,
+	Mode:     printerMode,
+	Tabwidth: tabWidth,
 }
 
 func gofmtFile(f *ast.File) ([]byte, error) {
diff --git a/src/cmd/fix/reflect.go b/src/cmd/fix/reflect.go
index 60bee166d..151da569d 100644
--- a/src/cmd/fix/reflect.go
+++ b/src/cmd/fix/reflect.go
@@ -188,7 +188,7 @@ func reflectFn(f *ast.File) bool {
 			}
 			*n = v
 		case *ast.IfStmt:
-			x := &ast.ExprStmt{n.Cond}
+			x := &ast.ExprStmt{X: n.Cond}
 			if reflectFixTypecheck(&n.Init, nil, []ast.Stmt{x, n.Body, n.Else}) {
 				n.Cond = x.X
 				fixed = true