:bug: Fix RtMidi plugin

diff --git a/plug b/plug
index 8b2628cb82ecd2959720c3be773b36184c98a9c6..2542a9c597a1b0a47e3970de1b45e2aed2ab691c 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit 8b2628cb82ecd2959720c3be773b36184c98a9c6
+Subproject commit 2542a9c597a1b0a47e3970de1b45e2aed2ab691c