[glib] gkeyfile: Fix -Wincompatible-pointer-types warning

[Philip Withnall <pwithnall src gnome org>]

commit e9dd5e18193c6e95b47c9cb9e60803171603270d
Author: Philip Withnall <withnall endlessm com>
Date:   Thu Feb 8 12:28:40 2018 +0000

    gkeyfile: Fix -Wincompatible-pointer-types warning
    
    Introduced in commit 1574321e51dc20eb2b0fdd699966428be3cc05eb.
    
    This fix introduces no functional changes (just a cast).
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    Reviewed-by: nobody

 glib/gkeyfile.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/glib/gkeyfile.c b/glib/gkeyfile.c
index 59730f7c1..ae3bbbc1d 100644
--- a/glib/gkeyfile.c
+++ b/glib/gkeyfile.c
@@ -2300,7 +2300,10 @@ g_key_file_get_locale_for_key (GKeyFile    *key_file,
   g_return_val_if_fail (key != NULL, NULL);
 
   if (locale != NULL)
-    languages = languages_allocated = g_get_locale_variants (locale);
+    {
+      languages_allocated = g_get_locale_variants (locale);
+      languages = (const gchar * const *) languages_allocated;
+    }
   else
     languages = g_get_language_names ();