src: fix data type in node_crypto.cc

Signed-off-by: gengjiawen <technicalcute@gmail.com>

PR-URL: #25889
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: gengjiawen

src/node_crypto.cc

@@ -6246,7 +6246,7 @@ void SetEngine(const FunctionCallbackInfo<Value>& args) {
   ENGINE* engine = LoadEngineById(*engine_id, &errmsg);
 
   if (engine == nullptr) {
-    int err = ERR_get_error();
+    unsigned long err = ERR_get_error();  // NOLINT(runtime/int)
     if (err == 0)
       return args.GetReturnValue().Set(false);
     return ThrowCryptoError(env, err);