[gtk] assistant: Fix the default value of has-padding

[Matthias Clasen <matthiasc src gnome org>]

commit c7467b4e7671a8745e86eaa8cefe90d683fbb08c
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Feb 8 08:21:42 2019 -0500

    assistant: Fix the default value of has-padding
    
    This was showing up in the defaultvalue test.

 gtk/gtkassistant.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index 50223bbc48..5fb3d13742 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -213,6 +213,7 @@ static void
 gtk_assistant_page_init (GtkAssistantPage *page)
 {
   page->type = GTK_ASSISTANT_PAGE_CONTENT;
+  page->has_padding = TRUE;
 }
 
 static void