cmd/compile, go/types: add missing space in error message
Otherwise "print(nil)" gets an error like
use of untyped nil in argument to built-inprint
Change-Id: Iaa841df106f90787031dce75a49af69860a9dbc9
Reviewed-on: https://go-review.googlesource.com/c/go/+/611918
Commit-Queue: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>