Merge 132371 - Crash when trying to write exception message to null console

Source/WebCore/dom/Document.cpp

Index: Source/WebCore/dom/Document.cpp
===================================================================
--- Source/WebCore/dom/Document.cpp	(revision 132690)
+++ Source/WebCore/dom/Document.cpp	(working copy)
@@ -5241,8 +5241,10 @@
         return;
     }
 
-    if (DOMWindow* window = domWindow())
-        window->console()->addMessage(source, type, level, message, sourceURL, lineNumber, callStack);
+    if (DOMWindow* window = domWindow()) {
+        if (Console* console = window->console())
+            console->addMessage(source, type, level, message, sourceURL, lineNumber, callStack);
+    }
 }
 
 struct PerformTaskContext {