[vz-dev] [volkszaehler/volkszaehler.org] 68abe2: Prevent error on double unsubscribe (#643)

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/volkszaehler/volkszaehler.org
  Commit: 68abe2fbc51130c6703ef6a76a8dbcb282fbcb23
      https://github.com/volkszaehler/volkszaehler.org/commit/68abe2fbc51130c6703ef6a76a8dbcb282fbcb23
  Author: andig <cpuidle at gmx.de>
  Date:   2017-10-22 (Sun, 22 Oct 2017)

  Changed paths:
    M htdocs/js/entity.js

  Log Message:
  -----------
  Prevent error on double unsubscribe (#643)