[gtk+] Cast to gchar* to fix a compilation warning

[Javier Jardón <jjardon src gnome org>]

commit 567b23229f78e2ca4d651c3ab60054fda5857d1b
Author: Javier Jardón <jjardon gnome org>
Date:   Sun Oct 25 22:47:17 2009 +0100

    Cast to gchar* to fix a compilation warning

 gdk-pixbuf/io-gif.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk-pixbuf/io-gif.c b/gdk-pixbuf/io-gif.c
index 04fb1d1..7e35953 100644
--- a/gdk-pixbuf/io-gif.c
+++ b/gdk-pixbuf/io-gif.c
@@ -411,8 +411,8 @@ gif_get_extension (GifContext *context)
                                 retval = get_data_block (context, (unsigned char *) context->block_buf, NULL);
                                 if (retval != 0)
                                         return retval;
-                                if (!strncmp (context->block_buf, "NETSCAPE2.0", 11) ||
-                                    !strncmp (context->block_buf, "ANIMEXTS1.0", 11)) {
+                                if (!strncmp ((gchar *)context->block_buf, "NETSCAPE2.0", 11) ||
+                                    !strncmp ((gchar *)context->block_buf, "ANIMEXTS1.0", 11)) {
                                         context->in_loop_extension = TRUE;
                                 }
                                 context->block_count = 0;