Defer signals in ErrorHandler.
Defer signals in ErrorHandler.

lmcro/letsencrypt,bsmr-misc-forks/letsencrypt,bsmr-misc-forks/letsencrypt,jsha/letsencrypt,stweil/letsencrypt,jtl999/certbot,letsencrypt/letsencrypt,jsha/letsencrypt,stweil/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt,jtl999/certbot