pjproject_bundled: Crash on pj_ssl_get_info() while ioqueue_on_read_complete().

When the Asterisk channel driver res_pjsip offers SIP-over-TLS, sometimes, not
reproducible, Asterisk crashed in pj_ssl_sock_get_info() because a NULL pointer
was read. This change avoids this crash.

ASTERISK-26927 #close

Change-Id: I24a6011b44d1426d159742ff4421cf806a52938b