encoding/xml: allow ]]> in attribute values
This is permitted by the XML specification.
Fixes #68387
Change-Id: Ic4ab5520a08a5a997f1c3d13c6d5f80c0521e45c
GitHub-Last-Rev:
6d2ac307bbd0ba7d50830ad8b879c00cc3a7242b
GitHub-Pull-Request: golang/go#69197
Reviewed-on: https://go-review.googlesource.com/c/go/+/610056
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>