Fix read out of buffer bounds when dealing with BIO_ADDR

Fix read out of buffer bounds when dealing with BIO_ADDR

This issue was discoevered while I was testing SSL_new_from_listener()
using a newly created unit test. It has turned out the QUIC stack
at few places contain pattern as follows:
	foo(QUIC_WHATEVER *q, BIO_ADDR *a)
	{
	   q->a = *a;
	}

The problem is that derefencning a that way is risky. If the address `a`
comes from BIO_lookup_ex() it may actually be shorter than sizeof(BIO_ADDR).
Using BIO_ADDR_copy() is the right thing to do here.

Fixes #26241

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/26252)