[xmlsec] RAND_seed() redux

[Jesse Pelton]

Thanks for your quick response.

A brief xmlsec debugging session revealed that RAND_status() will call down
to RAND_poll() if necessary. On my platform (Windows), RAND_poll() does a
better job of collecting random data than the approach I'd been considering.
I think that I'd be best served by just calling RAND_status() and giving up
if it fails. If it can't seed, the system is probably in dire straits
anyway.