[gtk+] gdk: Remove overeager checks

[Benjamin Otte <otte src gnome org>]

commit 66be6a018c95e876b26b82e0648bb034c9307e79
Author: Benjamin Otte <otte redhat com>
Date:   Sun Oct 5 11:18:15 2014 +0200

    gdk: Remove overeager checks
    
    Parent is guaranteed to not be NULL. It can only ever be NULL for root
    windows and root windows cannot be created with gdk_window_new() and
    gdk_window_ensure_native() will exit early because they already are
    native.
    
    Also, both functions would crash a few lines below where parent gets
    dereferenced.

 gdk/gdkwindow.c |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index e023042..495ccd7 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1335,8 +1335,7 @@ gdk_window_new (GdkWindow     *parent,
       window->input_only = TRUE;
     }
 
-  if (window->parent)
-    window->parent->children = g_list_prepend (window->parent->children, window);
+  window->parent->children = g_list_prepend (window->parent->children, window);
 
   if (window->parent->window_type == GDK_WINDOW_ROOT)
     {
@@ -1362,8 +1361,7 @@ gdk_window_new (GdkWindow     *parent,
       _gdk_display_create_window_impl (display, window, real_parent, screen, event_mask, attributes, 
attributes_mask);
       window->impl_window = window;
 
-      if (parent)
-        parent->impl_window->native_children = g_list_prepend (parent->impl_window->native_children, window);
+      parent->impl_window->native_children = g_list_prepend (parent->impl_window->native_children, window);
 
       /* This will put the native window topmost in the native parent, which may
        * be wrong wrt other native windows in the non-native hierarchy, so restack */
@@ -1712,9 +1710,8 @@ gdk_window_ensure_native (GdkWindow *window)
                                    NULL, 0);
   new_impl = window->impl;
 
-  if (parent)
-    parent->impl_window->native_children =
-      g_list_prepend (parent->impl_window->native_children, window);
+  parent->impl_window->native_children =
+    g_list_prepend (parent->impl_window->native_children, window);
 
   window->impl = old_impl;
   change_impl (window, window, new_impl);