AppWeather: no longer compiles

[FedericoBusero]

sketch\appWeather.cpp.o:(.literal._Z10appWeatherv+0x10): undefined reference to `get_loc_city'
sketch\appWeather.cpp.o:(.literal._Z10appWeatherv+0xd0): undefined reference to `get_city_from_lat_long(char*, char*)'
sketch\appWeather.cpp.o: In function `appWeather()':
sketch/appWeather.cpp:234: undefined reference to `get_city_from_lat_long(char*, char*)'

[wfdudley]

Oops. Fixed.