Golang cmd/compile: x/website compiler crash on tip

All the gotip builders are failing. See https://ci.chromium.org/p/golang/g/x-website-gotip-by-go/console which points at https://go.dev/cl/678620 as the culprit.

Comment From: mknyszek

CC @randall77 @Jorropo

Comment From: gabyhelp

Related Issues

• x/playground: fail to build with Go tip since CL 603476 #68999 (closed)

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