[dovecot/core] b1808d: lib-sasl: Fix xoauth2 data format

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: b1808dcac22fa2c75d5666cc98c9ab59f030a798
      https://github.com/dovecot/core/commit/b1808dcac22fa2c75d5666cc98c9ab59f030a798
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2017-03-07 (Tue, 07 Mar 2017)

  Changed paths:
    M src/lib-sasl/mech-oauthbearer.c

  Log Message:
  -----------
  lib-sasl: Fix xoauth2 data format

Authentication data was missing user=