commit 79140c7033519cdbcc9d59f08425ddda0a79bff7

Author: dormando <dormando@rydia.net>

Date:   Mon Mar 23 14:40:34 2020 -0700

    tls: fix refresh_certs crash when disabled

    segfaults server if refresh_certs command is run with TLS compiled in

    but not enabled.

diff --git a/tls.c b/tls.c

index c440a7e..ae1cb4d 100644

--- a/tls.c

+++ b/tls.c

@@ -94,6 +94,11 @@ static bool load_server_certificates(char **errmsg) {

         *errmsg = NULL;

         return false;

     }

+    if (settings.ssl_ctx == NULL) {

+        snprintf(error_msg, errmax, "Error TLS not enabled\r\n");

+        *errmsg = error_msg;

+        return false;

+    }

     SSL_LOCK();

     if (!SSL_CTX_use_certificate_chain_file(settings.ssl_ctx,

         settings.ssl_chain_cert)) {