#SDK-498 断网收到的语音，虽然界面显示了，但是还没加载完，导致收听过的语音又显示未听状态
Merge branch 'master' of https://github.com/easemob/sdkexamples-ios

# By jifang1218
# Via jifang1218
* 'master' of https://github.com/easemob/sdkexamples-ios:
  fix build break.