[gnome-maps] file-tile-source: Change from gchar * to guint8 *

[Marcus Lundblad <mlundblad src gnome org>]

commit 8769e92ce68a7a5f165ea35bf7bc8e687deccf0d
Author: Marcus Lundblad <ml update uu se>
Date:   Sun Aug 25 21:12:38 2019 +0200

    file-tile-source: Change from gchar * to guint8 *
    
    Adapt to API change in libchamplain
    
    Fixes #197

 lib/maps-file-tile-source.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/lib/maps-file-tile-source.c b/lib/maps-file-tile-source.c
index 4f880ef..25e73a4 100644
--- a/lib/maps-file-tile-source.c
+++ b/lib/maps-file-tile-source.c
@@ -548,12 +548,12 @@ tile_loaded_cb (GFile        *file,
   ChamplainTile *tile = user_data->tile;
   CallbackData *data;
   ChamplainRenderer *renderer;
-  char *content;
+  guint8 *content;
   gsize length;
 
   g_slice_free (CallbackData, user_data);
 
-  if (!g_file_load_contents_finish (file, res, &content, &length, NULL, NULL))
+  if (!g_file_load_contents_finish (file, res, (char **) &content, &length, NULL, NULL))
     {
       goto load_next;
     }