Update.

Update.

	* stdlib/random_r.c (__setstate_r): Also compute end_ptr
	correctly.
	(__initstate_r): Set errno on error.
	(__random_r): Likewise.
	(__setstate_r): Correct offset when computing
	new rptr and fptr.  Test for arg_state being NULL.
	Reported by Michael Fischer <fischer@cs.yale.edu>.