[gnumeric] UI: Use icon names, not stock ids.

[Morten Welinder <mortenw src gnome org>]

commit a8bea1e32e6dbb94565df68e81fd21ee075433b7
Author: Morten Welinder <terra gnome org>
Date:   Thu Jan 1 20:00:45 2015 -0500

    UI: Use icon names, not stock ids.

 src/dialogs/dialog-cell-format.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/dialogs/dialog-cell-format.c b/src/dialogs/dialog-cell-format.c
index 88d6f91..6781684 100644
--- a/src/dialogs/dialog-cell-format.c
+++ b/src/dialogs/dialog-cell-format.c
@@ -1668,19 +1668,19 @@ static struct {
 } validation_error_actions[] = {
        {
                N_("None          (silently accept invalid input)"),
-               NULL,
+               NULL
        },
        {
                N_("Stop            (never allow invalid input)"),
-               GTK_STOCK_STOP
+               "dialog-error"
        },
        {
                N_("Warning     (accept/discard invalid input)"),
-               GTK_STOCK_DIALOG_WARNING
+               "dialog-warning"
        },
        {
                N_("Information (allow invalid input)"),
-               GTK_STOCK_DIALOG_INFO
+               "dialog-information"
        }
 };