DecoratedWindow: don't mark an unmapped window as dirty geo

This was causing a new paint on a window that was about to be destroyed with invalid id, and thus with no shape informations (bzr r4067.8.11)

1 files changed, 3 insertions, 0 deletions

diff --git a/decorations/DecoratedWindow.cpp b/decorations/DecoratedWindow.cpp
index c9b4f650d..9d983a277 100644
--- a/decorations/DecoratedWindow.cpp
+++ b/decorations/DecoratedWindow.cpp
@@ -829,6 +829,9 @@ void Window::Impl::Damage()
 
 void Window::Impl::RedrawDecorations()
 {
+ if (!win_->isMapped())
+ return;
+
 dirty_geo_ = true;
 cwin_->damageOutputExtents();
 }