Fix MattermostView.focusOnWebview() if statement
Fix MattermostView.focusOnWebview() if statement

yuya-oc/electron-mattermost,mattermost/desktop,yuya-oc/electron-mattermost,yuya-oc/desktop,yuya-oc/electron-mattermost,mattermost/desktop,mattermost/desktop,yuya-oc/desktop,yuya-oc/desktop,mattermost/desktop,mattermost/desktop