external/curl: let curl cleanup what it wants but

do not create double free situation inside OpenSSL that relates to
the problematic static linking of LIBPKGFLAT inside pkg.  pkg-static
isn't affected, but since we are exiting at this point it makes little
sense to actively clear memory leaks that get torn down anyway.

Author: fichtner

external/curl/lib/vtls/openssl.c

@@ -2231,6 +2231,12 @@ static CURLcode ossl_shutdown(struct Curl_cfilter *cf,
   return result;
 }
 
+static void ossl_noclose(struct Curl_cfilter *cf, struct Curl_easy *data)
+{
+  (void)cf;
+  (void)data;
+}
+
 static void ossl_close(struct Curl_cfilter *cf, struct Curl_easy *data)
 {
   struct ssl_connect_data *connssl = cf->ctx;
@@ -5741,7 +5747,7 @@ const struct Curl_ssl Curl_ssl_openssl = {
   ossl_connect,             /* connect */
   Curl_ssl_adjust_pollset,  /* adjust_pollset */
   ossl_get_internals,       /* get_internals */
-  ossl_close,               /* close_one */
+  ossl_noclose,             /* close_one */
   ossl_close_all,           /* close_all */
   ossl_set_engine,          /* set_engine or provider */
   ossl_set_engine_default,  /* set_engine_default */