[egcs-19980608] Internal error in mistaken template usage.

[Hyman Rosen]

The current snapshot continues to get an internal error on this code:

	template < typename T > struct s { };
	int main(int, char **) { s< char > a = s(); }

I came across this bug when I accidentally tried to create an
istream_iterator using istream_iterator(), forgetting that it's
templated by the retrieved object type - I should have used
istream_iterator< char >().