Fix SCT list serialization in SignFromPrecert
Fix SCT list serialization in SignFromPrecert

geligaoli/cfssl,drcapulet/cfssl,cloudflare/cfssl,cloudflare/cfssl,geligaoli/cfssl,cloudflare/cfssl,geligaoli/cfssl,drcapulet/cfssl,geligaoli/cfssl,geligaoli/cfssl,drcapulet/cfssl,cloudflare/cfssl,drcapulet/cfssl,drcapulet/cfssl