* libmisc/rlogin.c: The size argument of read() is a size_t.

	* libmisc/rlogin.c: The size argument of read() is a size_t.
	Propagate this time to the callers (the get_remote_string() and
	do_rlogin() functions).
	* libmisc/rlogin.c: Add brackets and parenthesis.
	* libmisc/rlogin.c: Avoid multi-statements lines.
	* libmisc/rlogin.c: Avoid assignments in comparisons.
	* libmisc/rlogin.c: Avoid implicit conversion of pointers to
	booleans.