(acknowledge_grob): don't crash on

undefined tremolo.

diff --git a/lily/stem-engraver.cc b/lily/stem-engraver.cc
index b1f3eb4b9957c5a26ba92dd7ce005b53fbb640c3..13dd21b987a59eb1c8a5896b08d9f46757c04dc3 100644 (file)
--- a/lily/stem-engraver.cc
+++ b/lily/stem-engraver.cc
@@ -80,8 +80,11 @@ Stem_engraver::acknowledge_grob (Grob_info i)
               */
              int requested_type = gh_scm2int (tremolo_req_->get_mus_property ("tremolo-type"));
              SCM f = get_property ("tremoloFlags");
-             if (!requested_type && gh_number_p (f))
-               requested_type = gh_scm2int (f);
+             if (!requested_type)
+               if ( gh_number_p (f))
+                 requested_type = gh_scm2int (f);
+               else
+                 requested_type = 8;
              else
                daddy_trans_->set_property ("tremoloFlags", gh_int2scm (requested_type));