[libchamplain] demos: Fix confusingly swapped latitude/longitude retrieval in Python demo

[Jiří Techet <jiritechet src gnome org>]

commit a8073a3c837c291a3b3b5331ea2bc01f2f7ca2ca
Author: Jiří Techet <techet gmail com>
Date:   Fri Feb 12 16:45:37 2016 +0100

    demos: Fix confusingly swapped latitude/longitude retrieval in Python demo
    
    Thanks to Pavel Machek for the patch.

 demos/launcher-gtk.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/launcher-gtk.py b/demos/launcher-gtk.py
index 1863d8e..d5b4103 100755
--- a/demos/launcher-gtk.py
+++ b/demos/launcher-gtk.py
@@ -121,8 +121,8 @@ class LauncherGTK:
 
     def mouse_click_cb(self, actor, event, view):
         x, y = event.x, event.y
-        lat, lon = view.x_to_longitude(x), view.y_to_latitude(y)
-        print "Mouse click at: %f %f" % (lon, lat)
+        lon, lat = view.x_to_longitude(x), view.y_to_latitude(y)
+        print "Mouse click at: %f %f" % (lat, lon)
         return True
 
     def zoom_changed(self, widget):