[gtkglext] Set const on string literals

[Mukund Sivaraman <muks src gnome org>]

commit da5f1c147e3083f8a8d6a6cb1166c29359da436a
Author: Mukund Sivaraman <muks banu com>
Date:   Sun Sep 27 13:57:00 2009 +0530

    Set const on string literals

 gdk/x11/gdkglfont-x11.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/x11/gdkglfont-x11.c b/gdk/x11/gdkglfont-x11.c
index 610f3e4..7221eb9 100644
--- a/gdk/x11/gdkglfont-x11.c
+++ b/gdk/x11/gdkglfont-x11.c
@@ -34,7 +34,7 @@
 static char *
 gdk_gl_font_charset_for_locale (void)
 {
-  static char *charset_map[][2] = {
+  static const char *charset_map[][2] = {
     { "ANSI_X3.4-1968", "iso8859-1" },
     { "US-ASCII",   "iso8859-1" },
     { "ISO-8859-1", "iso8859-1" },
@@ -50,7 +50,7 @@ gdk_gl_font_charset_for_locale (void)
   };
 
   const char *codeset;
-  char *result = NULL;
+  const char *result = NULL;
   gsize i;
 
   g_get_charset (&codeset);