Close CDP socket listener thread before closing socket
Close CDP socket listener thread before closing socket

Otherwise we are getting `IOError: stream closed in another thread` on
quit.

titusfortner/selenium,SeleniumHQ/selenium,titusfortner/selenium,valfirst/selenium,valfirst/selenium,titusfortner/selenium,joshmgrant/selenium,valfirst/selenium,titusfortner/selenium,titusfortner/selenium,valfirst/selenium,SeleniumHQ/selenium,valfirst/selenium,HtmlUnit/selenium,SeleniumHQ/selenium,joshmgrant/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,joshmgrant/selenium,valfirst/selenium,HtmlUnit/selenium,joshmgrant/selenium,valfirst/selenium,titusfortner/selenium,joshmgrant/selenium,valfirst/selenium,titusfortner/selenium,SeleniumHQ/selenium,joshmgrant/selenium,titusfortner/selenium,SeleniumHQ/selenium,SeleniumHQ/selenium,joshmgrant/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,titusfortner/selenium,HtmlUnit/selenium,HtmlUnit/selenium,valfirst/selenium,SeleniumHQ/selenium,valfirst/selenium,valfirst/selenium,titusfortner/selenium,HtmlUnit/selenium,HtmlUnit/selenium,joshmgrant/selenium,SeleniumHQ/selenium,HtmlUnit/selenium,joshmgrant/selenium,joshmgrant/selenium,SeleniumHQ/selenium,titusfortner/selenium,HtmlUnit/selenium,joshmgrant/selenium