Bug 492286 - Null check in nsHTMLSourceElement::BindToTree(). r=roc

content/html/content/src/nsHTMLSourceElement.cpp

@@ -145,7 +145,7 @@ nsHTMLSourceElement::BindToTree(nsIDocument *aDocument,
                                                  aCompileEventHandlers);
   NS_ENSURE_SUCCESS(rv, rv);
 
-  if (!aParent->IsNodeOfType(nsINode::eMEDIA))
+  if (!aParent || !aParent->IsNodeOfType(nsINode::eMEDIA))
     return NS_OK;
 
   nsHTMLMediaElement* media = static_cast<nsHTMLMediaElement*>(aParent);

content/media/test/crashtests/492286-1.xhtml

+<source xmlns="http://www.w3.org/1999/xhtml"/>
\ No newline at end of file

content/media/test/crashtests/crashtests.list

@@ -4,3 +4,5 @@ load 468763-1.html
 load 474744-1.html
 load 493915-1.html
 load 495794-1.html
+load 492286-1.xhtml
+