cf-h3-proxy: add SSL flag

Since the proxy filter does TLS, it needs to set the SSL flag.

Follow-up to e78b1b3eccfa6a2e3
Closes #21770

Spotted by Codex Security

diff --git a/lib/cf-h3-proxy.c b/lib/cf-h3-proxy.c
index 1896ba6302dcd34aed65020169a87acf1451d061..6af81d6d590856028e8622a5929bb874213d0dfa 100644 (file)
--- a/lib/cf-h3-proxy.c
+++ b/lib/cf-h3-proxy.c
@@ -3421,7 +3421,7 @@ static CURLcode cf_h3_proxy_shutdown(struct Curl_cfilter *cf,
 
 struct Curl_cftype Curl_cft_h3_proxy = {
     "H3-PROXY",
-    CF_TYPE_IP_CONNECT | CF_TYPE_PROXY,
+    CF_TYPE_IP_CONNECT | CF_TYPE_PROXY | CF_TYPE_SSL,
     CURL_LOG_LVL_NONE,
     cf_h3_proxy_destroy,
     cf_h3_proxy_connect,