[glib] gtestdbus: Fix non-const use of const variables

[Philip Withnall <pwithnall src gnome org>]

commit 46c1aea0e7d77581ced8ebd064b5a886417f7371
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Tue Nov 12 13:10:33 2013 +0000

    gtestdbus: Fix non-const use of const variables
    
    The argv array should be declared as const.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=712148

 gio/gtestdbus.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gio/gtestdbus.c b/gio/gtestdbus.c
index d84a600..90dbb8d 100644
--- a/gio/gtestdbus.c
+++ b/gio/gtestdbus.c
@@ -586,7 +586,7 @@ write_config_file (GTestDBus *self)
 static void
 start_daemon (GTestDBus *self)
 {
-  gchar *argv[] = {"dbus-daemon", "--print-address", "--config-file=foo", NULL};
+  const gchar *argv[] = {"dbus-daemon", "--print-address", "--config-file=foo", NULL};
   gchar *config_path;
   gchar *config_arg;
   gint stdout_fd;
@@ -604,7 +604,7 @@ start_daemon (GTestDBus *self)
 
   /* Spawn dbus-daemon */
   g_spawn_async_with_pipes (NULL,
-                            argv,
+                            (gchar **) argv,
                             NULL,
 #ifdef G_OS_WIN32
                             /* We Need this to get the pid returned on win32 */