[libgweather] Fix memory leak

[Giovanni Campagna <gcampagna src gnome org>]

commit 5cd4fb5ad3344f8fe3c84b5c1872278bd7855ba7
Author: Andreas Brauchli <andreas brauchli sensirion com>
Date:   Wed May 17 22:29:05 2017 +0200

    Fix memory leak
    
    * Free (gchar *) loc->yahoo_id from GWeatherLocation on unref()
    
    https://bugzilla.gnome.org/show_bug.cgi?id=782760

 libgweather/gweather-location.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libgweather/gweather-location.c b/libgweather/gweather-location.c
index ccbb8ee..2a499a9 100644
--- a/libgweather/gweather-location.c
+++ b/libgweather/gweather-location.c
@@ -401,6 +401,7 @@ gweather_location_unref (GWeatherLocation *loc)
     g_free (loc->tz_hint);
     g_free (loc->station_code);
     g_free (loc->forecast_zone);
+    g_free (loc->yahoo_id);
     g_free (loc->radar);
 
     if (loc->children) {