[balsa/gtk4: 178/311] main-window: Stop using GtkButtonBox

[Peter Bloomfield <peterb src gnome org>]

commit d2ca9ebd5176e7156d90db8a2cfe7eeb691e799a
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Sat Aug 29 19:41:24 2020 -0400

    main-window: Stop using GtkButtonBox

 src/main-window.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/main-window.c b/src/main-window.c
index 7d2ed9054..4de82ac97 100644
--- a/src/main-window.c
+++ b/src/main-window.c
@@ -3902,11 +3902,11 @@ bw_find_real(BalsaWindow * window, BalsaIndex * bindex, gboolean again)
        /* Button box */
        box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
        gtk_container_set_border_width(GTK_CONTAINER(box), 6);
-        button = libbalsa_add_mnemonic_button_to_box(_("_Apply"), box, GTK_ALIGN_START);
+        button = libbalsa_add_button_to_box(_("_Apply"), box, GTK_ALIGN_START);
        g_signal_connect(button, "clicked",
                         G_CALLBACK(bw_find_button_clicked),
                         GINT_TO_POINTER(FIND_RESPONSE_FILTER));
-        button = libbalsa_add_mnemonic_button_to_box(_("_Clear"), box, GTK_ALIGN_END);
+        button = libbalsa_add_button_to_box(_("_Clear"), box, GTK_ALIGN_END);
        g_signal_connect(button, "clicked",
                         G_CALLBACK(bw_find_button_clicked),
                         GINT_TO_POINTER(FIND_RESPONSE_RESET));