http2: remove unsupported %.* specifier

The debug sprintf doesn't support %.* specifiers

Fixes: #35688

PR-URL: #35694
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ricky Zhou <0x19951125@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>

src/node_http2.cc

@@ -1136,7 +1136,7 @@ int Http2Session::OnNghttpError(nghttp2_session* handle,
   // Unfortunately, this is currently the only way for us to know if
   // the session errored because the peer is not an http2 peer.
   Http2Session* session = static_cast<Http2Session*>(user_data);
-  Debug(session, "Error '%.*s'", len, message);
+  Debug(session, "Error '%s'", message);
   if (strncmp(message, BAD_PEER_MESSAGE, len) == 0) {
     Environment* env = session->env();
     Isolate* isolate = env->isolate();