No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes #56129
Change-Id: I6c81933781384c5e2c8ba0fd99cec50455b9664a
Reviewed-on: https://go-review.googlesource.com/c/go/+/441976 Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Joedian Reid <joedian@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>