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Diffstat (limited to 'src/gui/painting/qwindowsurface_qws.cpp')
-rw-r--r--src/gui/painting/qwindowsurface_qws.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gui/painting/qwindowsurface_qws.cpp b/src/gui/painting/qwindowsurface_qws.cpp
index 639bc9288..d5a5c20dc 100644
--- a/src/gui/painting/qwindowsurface_qws.cpp
+++ b/src/gui/painting/qwindowsurface_qws.cpp
@@ -421,7 +421,8 @@ QWSWindowSurface::QWSWindowSurface(QWidget *widget)
QWSWindowSurface::~QWSWindowSurface()
{
#ifdef Q_BACKINGSTORE_SUBSURFACES
- winIdToSurfaceMap()->remove(winId());
+ if (d_ptr->winId)
+ winIdToSurfaceMap()->remove(d_ptr->winId);
#endif
delete d_ptr;