Import xfce4-weather-plugin upstream patch required to make location
search work after external site added additional requirement.

PR: 222909
Submitted by: Olivier Duchateau <duchateau.olivier@gmail.com>
Obtained from: https://git.xfce.org/panel-plugins/xfce4-weather-plugin/commit/?id=7c976663e8790e5b06ca31a4a3165b11aeb89f11
MFH: 2017Q4