[gnumeric] Compilation: fix warning.

[Morten Welinder <mortenw src gnome org>]

commit 660c3bbaac6a74475eaf482c886d4843e0593a0f
Author: Morten Welinder <terra gnome org>
Date:   Tue Dec 9 13:45:24 2014 -0500

    Compilation: fix warning.

 src/sheet-style.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/sheet-style.c b/src/sheet-style.c
index bfd2ad4..fcd830b 100644
--- a/src/sheet-style.c
+++ b/src/sheet-style.c
@@ -332,7 +332,7 @@ sheet_style_clear_style_dependents (Sheet *sheet, GnmRange const *r)
        GSList *styles = sh_all_styles (sheet->style_data->style_hash);
        g_slist_foreach (styles,
                         (GFunc)gnm_style_unlink_dependents,
-                        r);
+                        (gpointer)r);
        g_slist_free (styles);
 }