Adjust example programs to new key export API

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 334eb7d..9cecf7f 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -2529,19 +2529,19 @@
     if( opt.eap_tls != 0 )
     {
         mbedtls_ssl_conf_export_keys_cb( &conf, eap_tls_key_derivation,
-                                             &eap_tls_keying );
+                                         &eap_tls_keying );
     }
     else if( opt.nss_keylog != 0 )
     {
         mbedtls_ssl_conf_export_keys_cb( &conf,
-                                             nss_keylog_export,
-                                             NULL );
+                                         nss_keylog_export,
+                                         NULL );
     }
 #if defined( MBEDTLS_SSL_DTLS_SRTP )
     else if( opt.use_srtp != 0 )
     {
         mbedtls_ssl_conf_export_keys_cb( &conf, dtls_srtp_key_derivation,
-                                             &dtls_srtp_keying );
+                                         &dtls_srtp_keying );
     }
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 #endif /* MBEDTLS_SSL_EXPORT_KEYS */