[glade/glade-3-18] Check use-underline for whether mnemonic-widget can be set

[Juan Pablo Ugarte <jpu src gnome org>]

commit 3ad52c12b0a53f50855d34f31a92fe8ae0e763e9
Author: David Shea <dshea redhat com>
Date:   Wed Apr 16 17:53:36 2014 -0400

    Check use-underline for whether mnemonic-widget can be set

 plugins/gtk+/glade-gtk-label.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/gtk+/glade-gtk-label.c b/plugins/gtk+/glade-gtk-label.c
index ebd9658..6f3d316 100644
--- a/plugins/gtk+/glade-gtk-label.c
+++ b/plugins/gtk+/glade-gtk-label.c
@@ -399,7 +399,7 @@ glade_gtk_label_read_widget (GladeWidgetAdaptor * adaptor,
     glade_widget_property_set (widget, "label-wrap-mode",
                                GLADE_LABEL_WRAP_FREE);
 
-  if (glade_widget_property_original_default (widget, "use-markup"))
+  if (glade_widget_property_original_default (widget, "use-underline"))
     glade_widget_property_set_sensitive (widget, "mnemonic-widget",
                                          FALSE, MNEMONIC_INSENSITIVE_MSG);