src/nginx_module/ContentHandler.c in passenger-5.0.24 vs src/nginx_module/ContentHandler.c in passenger-5.0.25

@@ -740,10 +740,11 @@
      * S = SSL
      */
 
     PUSH_STATIC_STR("!~FLAGS: DC");
     #if (NGX_HTTP_SSL)
-        if (r->http_connection->ssl) {
+        if (r->http_connection != NULL /* happens in sub-requests */
+                && r->http_connection->ssl) {
             PUSH_STATIC_STR("S");
         }
     #endif
     PUSH_STATIC_STR("\r\n\r\n");