Invalid signature leads to process termination

[thirtified]

The findResponder() routing in verify.js will throw an exception in case it is unable to verify the signature. This exception is not caught in verify() and thus will lead to crashing of the application.

project/node_modules/ocsp/lib/ocsp/verify.js:25
      throw new Error('Invalid signature');
      ^

Error: Invalid signature
    at findResponder (project/node_modules/ocsp/lib/ocsp/verify.js:25:13)
    at Object.verify (project/eidas-cert-check/node_modules/ocsp/lib/ocsp/verify.js:72:22)
    at project/node_modules/ocsp/lib/ocsp/check.js:38:12
    at done (project/node_modules/ocsp/lib/ocsp/utils.js:26:7)
    at IncomingMessage.<anonymous> (project/node_modules/ocsp/lib/ocsp/utils.js:46:7)
    at IncomingMessage.emit (events.js:327:22)
    at endReadableNT (_stream_readable.js:1224:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)

[thirtified]

Great, turns out there is already a pending PR for this: #36