bug 115659 xul radio buttons not exposed properly through accessibility

r=aaronl
sr=jag

accessible/src/xul/nsXULFormControlAccessible.cpp

@@ -527,7 +527,7 @@ NS_IMETHODIMP nsXULRadioButtonAccessible::GetAccParent(nsIAccessible **  aAccPar
 
 /** Constructor */
 nsXULRadioGroupAccessible::nsXULRadioGroupAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
-nsFormControlAccessible(aNode, aShell)
+nsAccessible(aNode, aShell)
 { 
 }
 

accessible/src/xul/nsXULFormControlAccessible.h

@@ -118,7 +118,7 @@ public:
   NS_IMETHOD GetAccState(PRUint32 *_retval);
 };
 
-class nsXULRadioGroupAccessible : public nsFormControlAccessible
+class nsXULRadioGroupAccessible : public nsAccessible
 {
 public:
   nsXULRadioGroupAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell);