Bug 1167614. Re-enable core location geo provider. r=hannosch

browser/app/profile/firefox.js

@@ -1806,7 +1806,11 @@ pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MO
 #endif
 
 #ifdef XP_MACOSX
+#ifdef RELEASE_BUILD
 pref("geo.provider.use_corelocation", false);
+#else
+pref("geo.provider.use_corelocation", true);
+#endif
 #endif
 
 #ifdef XP_WIN