cmd/compile: reorder BlankNode assignment to make SetType more clear
Change-Id: I9e6bf9ed100de2039961a6f6558daaa09c176861
GitHub-Last-Rev:
594331fa10cfe22cc34801a09a642d31156bfdab
GitHub-Pull-Request: golang/go#59072
Reviewed-on: https://go-review.googlesource.com/c/go/+/476895
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>