tls: use optional chaining to simplify checks

PR-URL: #41337
Reviewed-By: Tobias Nießen <[email protected]>
Reviewed-By: Franziska Hinkelmann <[email protected]>

Author: aduh95

lib/internal/tls/secure-context.js

@@ -161,11 +161,9 @@ function configSecureContext(context, options = {}, name = 'options') {
       for (let i = 0; i < key.length; ++i) {
         const val = key[i];
         const pem = (
-          val !== undefined && val !== null &&
-          val.pem !== undefined ? val.pem : val);
+          val?.pem !== undefined ? val.pem : val);
         const pass = (
-          val !== undefined && val !== null &&
-          val.passphrase !== undefined ? val.passphrase : passphrase);
+          val?.passphrase !== undefined ? val.passphrase : passphrase);
         setKey(context, pem, pass, name);
       }
     } else {