am 03b08986: Allow a pubkeyRef to be null
am 03b08986: Allow a pubkeyRef to be null

* commit '03b08986036375f9cf5b0e1e00ab159b287d03c4':
  Allow a pubkeyRef to be null

google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt