Fix for bug 10644. In cases where we expect boolean attributes, accept anything that can be converted to a boolean. a=jar r=pollmann.

dom/src/base/nsJSUtils.cpp

@@ -420,7 +420,7 @@ nsJSUtils::nsConvertJSValToBool(PRBool* aProp,
                                 jsval aValue)
 {
   JSBool temp;
-  if (JSVAL_IS_BOOLEAN(aValue) && JS_ValueToBoolean(aContext, aValue, &temp)) {
+  if (JS_ValueToBoolean(aContext, aValue, &temp)) {
     *aProp = (PRBool)temp;
   }
   else {