[gtk+] Notebook: Remove null check after dereference

[Daniel Boles <dboles src gnome org>]

commit fc619706b7d606fd627b5502b48a7e920e922ca3
Author: Daniel Boles <dboles src gnome org>
Date:   Tue Aug 1 19:45:57 2017 +0100

    Notebook: Remove null check after dereference
    
    This function clearly assumes the parameter children cannot be NULL, and
    the call sites seem to perform enough checks to confirm this.
    
    CID 1388869 (#1 of 1): Dereference before null check (REVERSE_INULL)
    check_after_deref: Null-checking children suggests that it may be null,
    but it has already been dereferenced on all paths leading to the check.

 gtk/gtknotebook.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index ce55bc5..904dfe7 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -5167,8 +5167,7 @@ gtk_notebook_calculate_tabs_allocation (GtkNotebook          *notebook,
     }
 
   /* Don't move the current tab past the last position during tabs reordering */
-  if (children &&
-      priv->operation == DRAG_OPERATION_REORDER &&
+  if (priv->operation == DRAG_OPERATION_REORDER &&
       direction == STEP_NEXT)
     {
       switch (tab_pos)