[GTK][WPE] Destroy AcceleratedSurface when ThreadedCompositor is inva…

…lidated

https://bugs.webkit.org/show_bug.cgi?id=288360

Reviewed by Nikolas Zimmermann.

* Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/ThreadedCompositor.cpp:
(WebKit::ThreadedCompositor::invalidate):

Canonical link: https://commits.webkit.org/290942@main

Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/ThreadedCompositor.cpp

@@ -178,6 +178,7 @@ void ThreadedCompositor::invalidate()
     m_layerTreeHost = nullptr;
     m_surface->willDestroyCompositingRunLoop();
     m_compositingRunLoop = nullptr;
+    m_surface = nullptr;
 }
 
 void ThreadedCompositor::suspend()