runtime: remove useless nil checking during init of itab
Change-Id: I8ef12221e18e163b695d88f4bb8c309763341ec3
GitHub-Last-Rev:
d3d4d4cb79418ccbb027a08892a95368888acbbf
GitHub-Pull-Request: golang/go#64107
Reviewed-on: https://go-review.googlesource.com/c/go/+/542116
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@google.com>