[gimp] app: Don't remove the toolbox dock from dock columns

[Martin Nordholts <martinn src gnome org>]

commit 5c4154d4383f1b63fa08068b04f683d940b919d1
Author: Martin Nordholts <martinn src gnome org>
Date:   Wed Jan 6 15:10:32 2010 +0100

    app: Don't remove the toolbox dock from dock columns
    
    The toolbox always wants to make trouble :( Don't remove the toolbox
    dock, even if it's empty.

 app/widgets/gimpdockcolumns.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/app/widgets/gimpdockcolumns.c b/app/widgets/gimpdockcolumns.c
index ef316c6..17c55d4 100644
--- a/app/widgets/gimpdockcolumns.c
+++ b/app/widgets/gimpdockcolumns.c
@@ -39,6 +39,7 @@
 #include "gimpdockcolumns.h"
 #include "gimpmenudock.h"
 #include "gimppanedbox.h"
+#include "gimptoolbox.h"
 
 #include "gimp-log.h"
 
@@ -178,7 +179,8 @@ gimp_dock_columns_dock_book_removed (GimpDockColumns *dock_columns,
 {
   g_return_if_fail (GIMP_IS_DOCK (dock));
 
-  if (gimp_dock_get_dockbooks (dock) == NULL)
+  if (gimp_dock_get_dockbooks (dock) == NULL &&
+      ! GIMP_IS_TOOLBOX (dock))
     gimp_dock_columns_remove_dock (dock_columns, dock);
 }