Merge 107729

Source/WebCore/loader/NavigationScheduler.cpp

Index: Source/WebCore/loader/NavigationScheduler.cpp
===================================================================
--- Source/WebCore/loader/NavigationScheduler.cpp	(revision 109376)
+++ Source/WebCore/loader/NavigationScheduler.cpp	(working copy)
@@ -422,6 +422,8 @@
 {
     ASSERT(m_frame->page());
 
+    RefPtr<Frame> protect(m_frame);
+
     // If a redirect was scheduled during a load, then stop the current load.
     // Otherwise when the current load transitions from a provisional to a 
     // committed state, pending redirects may be cancelled. 
@@ -437,6 +439,9 @@
     if (!m_frame->loader()->isComplete() && m_redirect->isLocationChange())
         m_frame->loader()->completed();
 
+    if (!m_frame->page())
+        return;
+
     startTimer();
 }