[goffice] Compilation: silence warning.

[Morten Welinder <mortenw src gnome org>]

commit 2f7c425349ad5160b645d1a865176874d285a2b0
Author: Morten Welinder <terra gnome org>
Date:   Tue Sep 13 14:47:10 2011 -0400

    Compilation: silence warning.

 goffice/gtk/go-format-sel.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/goffice/gtk/go-format-sel.c b/goffice/gtk/go-format-sel.c
index a6162f0..e254527 100644
--- a/goffice/gtk/go-format-sel.c
+++ b/goffice/gtk/go-format-sel.c
@@ -570,7 +570,9 @@ fmt_dialog_init_fmt_list (GOFormatSel *gfs, char const *const *formats,
 				    0, fmt, -1);
 		g_free (fmt);
 		if (fhash)
-			g_hash_table_insert (fhash, *formats, GINT_TO_POINTER (1));
+			g_hash_table_insert (fhash,
+					     (gpointer)(*formats),
+					     GINT_TO_POINTER (1));
 
 		/* Magic formats are fully defined by their magic.  */
 		found = cur_magic