Memory leak in plugins

[firthm01]

The monitoring plugins have a memory leak. This seems to be fixed in size and does not grow. It seems to have been present since at least 0.7.2, but possibly earlier too (didn't try compiling any versions before. Also did not test if bin mon plugin is affected).
It can be seen by running the VS debugger on REAPER and placing just one monitoring plugin on a track (no scene/inputs required). VS will give a dump similar to below on exit;
0-8-0_mem_mon-plugin-only.txt

[firthm01]

Update: not just monitoring - have seen a similar dump with just an object plugin instantiated