Make sure we're only ever quitting if we have a valid browser object
Make sure we're only ever quitting if we have a valid browser object

anthonywoo/sauce_ruby,saucelabs/sauce_ruby,saucelabs/sauce_ruby,DylanLacey/sauce_ruby,bootstraponline/sauce_ruby,angelabier1/sauce_ruby,bootstraponline/sauce_ruby,DylanLacey/sauce_ruby,angelabier1/sauce_ruby,bootstraponline/sauce_ruby,anthonywoo/sauce_ruby,angelabier1/sauce_ruby,bootstraponline/sauce_ruby,angelabier1/sauce_ruby