I would like to have geolocation within the Tor Browser turned on.  I set geo.enabled to 'true'.  If I go to www.browserleaks.org/geo it does ask for me to allow it, but it always comes back with 'POSITION_UNAVAILABLE'.  I have gone through the code in nsGeolocation.cpp and it isn't obvious to me why it is returning this. Do I need to build the browser with some specific switches set?  I am using 9.5a7 and building for Windows 64-bit.  

Thanks

Drew