[gtk+] Squash two compilation warnings about possibly-uninitialzed

[Colin Walters <walters src gnome org>]

commit c8fdd5e847181997cf8f366a1d47bff53d0d7976
Author: Colin Walters <walters verbum org>
Date:   Thu Aug 25 14:47:21 2011 -0400

    Squash two compilation warnings about possibly-uninitialzed

 gtk/gtkiconview.c |    2 +-
 gtk/gtknotebook.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkiconview.c b/gtk/gtkiconview.c
index fe8ccb3..6214706 100644
--- a/gtk/gtkiconview.c
+++ b/gtk/gtkiconview.c
@@ -3692,7 +3692,7 @@ gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
 				   gint         count)
 {
   GtkIconViewItem *item;
-  GtkCellRenderer *cell;
+  GtkCellRenderer *cell = NULL;
   gboolean dirty = FALSE;
   gint step;
   GtkDirectionType direction;
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 9c7ece5..0ae65ef 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -2254,7 +2254,7 @@ gtk_notebook_size_request (GtkWidget      *widget,
 
       if (priv->show_tabs)
         {
-          GtkRequisition tabs_requisition;
+          GtkRequisition tabs_requisition = { 0, 0 };
 
           gtk_notebook_get_preferred_tabs_size (notebook, &tabs_requisition);
           if (orientation == GTK_ORIENTATION_HORIZONTAL)