Fix build when using -Werror=format-security.

diff --git a/src/tetrinet.c b/src/tetrinet.c
index 635c795ba17e88bf2d79949c7ad5a80f58a03f50..ca5c5cf1c8ea73b07531822b4cf8f5551d419b91 100644 (file)
--- a/src/tetrinet.c
+++ b/src/tetrinet.c
@@ -232,7 +232,7 @@ void tetrinet_inmessage (enum inmsg_type msgtype, char *data)
             dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
                                              GTK_MESSAGE_ERROR,
                                              GTK_BUTTONS_OK,
-                                             buf);
+                                             "%s", buf);
             gtk_dialog_run (GTK_DIALOG(dialog));
             gtk_widget_destroy (dialog);
             g_free (data_utf8);