The 120->124 change in https://go-review.googlesource.com/c/go/+/61511/21/test/nosplit.go#143
looks accidental. Change back to 120.

Change-Id: I1690a8ae2d32756ba05544d2ed1baabfa64e1704
Reviewed-on: https://go-review.googlesource.com/131958
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>