cmd/internal/obj: replace bytes.Index call with bytes.Contains
Change-Id: I6b30ac3e9d15c29197426fb16dc4031056f6bb10
GitHub-Last-Rev:
e2dda286f26587726870a5779d6caa0c5abd6750
GitHub-Pull-Request: golang/go#66331
Reviewed-on: https://go-review.googlesource.com/c/go/+/571915
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>