Fix oauth vc when delete is nil
Fix oauth vc when delete is nil

rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client,rogerthat-platform/rogerthat-ios-client