move shutdown calls into check for ssn->ssl. Found by PVS-Studio

diff --git a/src/main/tls.c b/src/main/tls.c
index 088ea23..237f49a 100644 (file)
--- a/src/main/tls.c
+++ b/src/main/tls.c
@@ -823,10 +823,10 @@ static void session_init(tls_session_t *ssn)
 
 static void session_close(tls_session_t *ssn)
 {
-       SSL_set_quiet_shutdown(ssn->ssl, 1);
-       SSL_shutdown(ssn->ssl);
-
        if (ssn->ssl) {
+               SSL_set_quiet_shutdown(ssn->ssl, 1);
+               SSL_shutdown(ssn->ssl);
+
                SSL_free(ssn->ssl);
                ssn->ssl = NULL;
        }