Index: lmms-1.2.1/plugins/MidiImport/portsmf/allegro.cpp
===================================================================
--- lmms-1.2.1.orig/plugins/MidiImport/portsmf/allegro.cpp	2020-03-28 13:53:04.668157976 +0200
+++ lmms-1.2.1/plugins/MidiImport/portsmf/allegro.cpp	2020-03-28 13:55:02.828782278 +0200
@@ -2300,6 +2300,7 @@ Alg_event_ptr &Alg_seq::operator[](int i
         tr++;
     }
 	assert(false); // out of bounds
+	exit(EXIT_FAILURE);
 }