operator!=( const nsCOMPtr<T>& lhs, U* rhs )
operator!=( NSCAP_Zero* lhs, const nsCOMPtr<T>& rhs )
operator!=( const nsCOMPtr<T>& lhs, U* rhs )  {    return NS_STATIC_CAST(const void*, lhs.get()) != NS_STATIC_CAST(void*, rhs);  }