[dia] Don't use deprecated function gtk_label_set().

[Hans Breuer <hans src gnome org>]

commit db4ccd9917e9778a69868998f4badab037b74182
Author: Adam Buchbinder <adam buchbinder gmail com>
Date:   Mon May 4 12:26:05 2009 -0400

    Don't use deprecated function gtk_label_set().
    
    Replaced gtk_label_set() with gtk_label_set_text():
    http://library.gnome.org/devel/gtk/stable/GtkLabel.html#gtk-label-set
    
    Signed-off-by: Adam Buchbinder <adam buchbinder gmail com>
    Signed-off-by: Hans Breuer <hans breuer org>
---
 app/diapagelayout.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/app/diapagelayout.c b/app/diapagelayout.c
index b730bf8..e90fc9d 100644
--- a/app/diapagelayout.c
+++ b/app/diapagelayout.c
@@ -741,7 +741,7 @@ paper_size_change(GtkMenuItem *item, DiaPageLayout *self)
   g_snprintf(buf, sizeof(buf), _("%0.3gcm x %0.3gcm"),
 	     get_paper_pswidth(self->papernum),
 	     get_paper_psheight(self->papernum));
-  gtk_label_set(GTK_LABEL(self->paper_label), buf);
+  gtk_label_set_text(GTK_LABEL(self->paper_label), buf);
 
   gtk_signal_emit(GTK_OBJECT(self), pl_signals[CHANGED]);
 }