[gtk+/gtk-2-22] Make toolbutton not call functions on non-GtkMisc

[Tomeu Vizoso <tomeuv src gnome org>]

commit b1cc8b9cd88cf1eab4e9ec8c3cdbfb1307b6e79c
Author: Benjamin Otte <otte redhat com>
Date:   Mon May 3 18:22:42 2010 +0200

    Make toolbutton not call functions on non-GtkMisc

 gtk/gtktoolbutton.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktoolbutton.c b/gtk/gtktoolbutton.c
index 4225401..0e6ae59 100644
--- a/gtk/gtktoolbutton.c
+++ b/gtk/gtktoolbutton.c
@@ -470,11 +470,11 @@ gtk_tool_button_construct_contents (GtkToolItem *tool_item)
 	  gtk_widget_show (icon);
 	}
 
-      if (icon && text_orientation == GTK_ORIENTATION_HORIZONTAL)
+      if (GTK_IS_MISC (icon) && text_orientation == GTK_ORIENTATION_HORIZONTAL)
 	gtk_misc_set_alignment (GTK_MISC (icon),
 				1.0 - gtk_tool_item_get_text_alignment (GTK_TOOL_ITEM (button)),
 				0.5);
-      else if (icon)
+      else if (GTK_IS_MISC (icon))
 	gtk_misc_set_alignment (GTK_MISC (icon),
 				0.5,
 				gtk_tool_item_get_text_alignment (GTK_TOOL_ITEM (button)));