examples/ct: pull cert/pre-cert variance to top of function
examples/ct: pull cert/pre-cert variance to top of function

gdbelvin/trillian,Martin2112/trillian,AlCutter/trillian,daviddrysdale/trillian,codingllama/trillian,gtank/trillian,RJPercival/trillian,Martin2112/trillian,daviddrysdale/trillian,gdbelvin/trillian,google/trillian,gdbelvin/trillian,daviddrysdale/trillian,codingllama/trillian,Martin2112/trillian,google/trillian,RJPercival/trillian,AlCutter/trillian,gtank/trillian