ASSERT_CLASS_FITS_IN_CELL(ErrorConstructor);
-ErrorConstructor::ErrorConstructor(ExecState* exec, PassRefPtr<Structure> structure, ErrorPrototype* errorPrototype)
+ErrorConstructor::ErrorConstructor(ExecState* exec, NonNullPassRefPtr<Structure> structure, ErrorPrototype* errorPrototype)
: InternalFunction(&exec->globalData(), structure, Identifier(exec, errorPrototype->classInfo()->className))
{
// ECMA 15.11.3.1 Error.prototype