in tostruct_sig(), store zero-length signatures as zero-length isc_mem_get() block, not NULL pointer; misc. stylistic changes from code review
in tostruct_sig(), store zero-length signatures as
zero-length isc_mem_get() block, not NULL pointer;
misc. stylistic changes from code review

pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9