Fix Sequence/Event const-correctness issues

[ardour.git] / libs / ardour / midi_playlist.cc

diff --git a/libs/ardour/midi_playlist.cc b/libs/ardour/midi_playlist.cc
index 4c200f60b541d88595816087a8e6e670421eabdf..67764d66aeefa5880d5c1a6f6ccd6c7336ba1925 100644 (file)
--- a/libs/ardour/midi_playlist.cc
+++ b/libs/ardour/midi_playlist.cc
@@ -92,7 +92,7 @@ MidiPlaylist::~MidiPlaylist ()
 
 template<typename Time>
 struct EventsSortByTimeAndType {
-    bool operator() (Evoral::Event<Time>* a, Evoral::Event<Time>* b) {
+    bool operator() (const Evoral::Event<Time>* a, const Evoral::Event<Time>* b) {
            if (a->time() == b->time()) {
                    if (parameter_is_midi ((AutomationType)a->event_type()) &&
                        parameter_is_midi ((AutomationType)b->event_type())) {