Drop IPlugView pointer when host drops proxy

src/common/logging/vst3.cpp

@@ -35,6 +35,15 @@ void Vst3Logger::log_unknown_interface(
     }
 }
 
+bool Vst3Logger::log_request(bool is_host_vst,
+                             const Vst3PlugViewProxy::Destruct& request) {
+    return log_request_base(is_host_vst, [&](auto& message) {
+        // We don't know what class this instance was originally instantiated
+        // as, but it also doesn't really matter
+        message << request.owner_instance_id << ": IPlugView::~IPlugView()";
+    });
+}
+
 bool Vst3Logger::log_request(bool is_host_vst,
                              const Vst3PluginProxy::Construct& request) {
     return log_request_base(is_host_vst, [&](auto& message) {

src/common/logging/vst3.h

@@ -59,6 +59,7 @@ class Vst3Logger {
     // `log_request()` call returned `true`. This way we can filter out the
     // log message for the response together with the request.
 
+    bool log_request(bool is_host_vst, const Vst3PlugViewProxy::Destruct&);
     bool log_request(bool is_host_vst, const Vst3PluginProxy::Construct&);
     bool log_request(bool is_host_vst, const Vst3PluginProxy::Destruct&);
     bool log_request(bool is_host_vst, const Vst3PluginProxy::SetState&);