os: gofmt

Change-Id: Ie76303e403f0539bdfe14f6bb5f32896df916bce
Reviewed-on: https://go-review.googlesource.com/c/go/+/204657
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/os/removeall_noat.go

@@ -130,7 +130,7 @@ func removeAll(path string) error {
 	}
 	if runtime.GOOS == "windows" && IsPermission(err1) {
 		if fs, err := Stat(path); err == nil {
-			if err = Chmod(path, FileMode(0200 | int(fs.Mode()))); err == nil {
+			if err = Chmod(path, FileMode(0200|int(fs.Mode()))); err == nil {
 				err1 = Remove(path)
 			}
 		}