src: improve error handling in CloneSSLCerts

If sk_X509_new() returns NULL or if sk_X509_push() fails, return instead
of silently ignoring the error.

PR-URL: #44410
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Filip Skokan <[email protected]>

Author: tniessen

src/crypto/crypto_common.cc

@@ -339,8 +339,9 @@ MaybeLocal<Value> GetCipherVersion(Environment* env, const SSL_CIPHER* cipher) {
 StackOfX509 CloneSSLCerts(X509Pointer&& cert,
                           const STACK_OF(X509)* const ssl_certs) {
   StackOfX509 peer_certs(sk_X509_new(nullptr));
-  if (cert)
-    sk_X509_push(peer_certs.get(), cert.release());
+  if (!peer_certs) return StackOfX509();
+  if (cert && !sk_X509_push(peer_certs.get(), cert.release()))
+    return StackOfX509();
   for (int i = 0; i < sk_X509_num(ssl_certs); i++) {
     X509Pointer cert(X509_dup(sk_X509_value(ssl_certs, i)));
     if (!cert || !sk_X509_push(peer_certs.get(), cert.get()))