Make sure AllowRepaintScope::m_originalValue is always initialized

Source/core/frame/FrameView.h

Index: Source/core/frame/FrameView.h
diff --git a/Source/core/frame/FrameView.h b/Source/core/frame/FrameView.h
index ddbcc32ce91be94b87f21e292b636eadebcd7d66..8db5cf6ad089e0a0bef5528a16ad0a19ce294b95 100644
--- a/Source/core/frame/FrameView.h
+++ b/Source/core/frame/FrameView.h
@@ -551,11 +551,11 @@ class AllowRepaintScope {
 public:
     explicit AllowRepaintScope(FrameView* view)
         : m_view(view)
+        , m_originalValue(view ? view->canRepaintDuringPerformLayout() : false)
     {
         if (!m_view)
             return;
 
-        m_originalValue = m_view->canRepaintDuringPerformLayout();
         m_view->setCanRepaintDuringPerformLayout(true);
     }