rest/cors_test: tests for empty Access-Control-Request-Headers in preflight requests
rest/cors_test: tests for empty Access-Control-Request-Headers in preflight requests

Signed-off-by: Maciej Borzecki <f609d9f713abcd5f8f0e51f08dc151638a7681e7@rndity.com>

ant0ine/go-json-rest