[w3c/webauthn] 393469: fix #1012 determine attsCredData length

  Branch: refs/heads/jeffh-fix-1012-attestedcreddata-length
  Home:   https://github.com/w3c/webauthn
  Commit: 39346998fcdecf3eeaf420c40ca0deb8c4b2883c
      https://github.com/w3c/webauthn/commit/39346998fcdecf3eeaf420c40ca0deb8c4b2883c
  Author: JeffH <Jeff.Hodges@PayPal.com>
  Date:   2018-08-01 (Wed, 01 Aug 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  fix #1012 determine attsCredData length



      **NOTE:** This service has been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/

      Functionality will be removed from GitHub.com on January 31st, 2019.