修复内存泄露

core/audio/mixer/mixer_track.cpp

@@ -6,7 +6,8 @@
 #include "thread_message/thread_message_hubs.h"
 
 mixer_track::~mixer_track() {
-
+    delete channel_interface_;
+    channel_interface_ = nullptr;
 }
 
 void mixer_track::init() {

core/audio/mixer/mixer_track.h

@@ -51,7 +51,6 @@ public:
     multicast_delegate<plugin_host*> on_add_effect;
     multicast_delegate<plugin_host*> on_remove_effect;
 private:
-    void add_effect_internal(plugin_host* in_effect);
     const mixer_track_type type_;
     channel_interface* channel_interface_ = nullptr;
 };