Pull up following revision(s) (requested by christos in ticket #1722):

external/bsd/ppp/dist/pppd/eap.c: revision 1.5

pppd: Fix bounds check in EAP code

Given that we have just checked vallen < len, it can never be the case
that vallen >= len + sizeof(rhostname).  This fixes the check so we
actually avoid overflowing the rhostname array.

Reported-by: Ilja Van Sprundel <ivansprundel%ioactive.com@localhost>

Signed-off-by: Paul Mackerras <paulus%ozlabs.org@localhost>

From:
https://github.com/paulusmack/ppp/commit/8d7970b8f3db727fe798b65f3377fe6787575426

(martin)