[geocode-glib] test-gcglib: Minor const-correctness fix

[Philip Withnall <pwithnall src gnome org>]

commit 3bb02906590f436102dc05ee976d94194813ea00
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Thu Oct 13 11:55:18 2016 +0100

    test-gcglib: Minor const-correctness fix
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756311

 geocode-glib/test-gcglib.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/geocode-glib/test-gcglib.c b/geocode-glib/test-gcglib.c
index fe8a8bd..9db1584 100644
--- a/geocode-glib/test-gcglib.c
+++ b/geocode-glib/test-gcglib.c
@@ -353,7 +353,7 @@ test_osm_type (void)
        GeocodePlace *place;
        guint i;
        struct {
-               char *search_string;
+               const gchar *search_string;
                GeocodePlaceOsmType osm_type;
        } types[] = {
                { "Drottning Christinas väg", GEOCODE_PLACE_OSM_TYPE_WAY },