Index: /trunk/src/VBox/HostDrivers/Support/darwin/SUPDrv-darwin.cpp
===================================================================
--- /trunk/src/VBox/HostDrivers/Support/darwin/SUPDrv-darwin.cpp	(revision 56575)
+++ /trunk/src/VBox/HostDrivers/Support/darwin/SUPDrv-darwin.cpp	(revision 56576)
@@ -946,4 +946,5 @@
              * by us.  So, first time around we make sure it's set so we won't
              * crash in the pre-4.3.28/5.0RC1 upgrade scenario.
+             * See @bugref{7907}.
              */
             static bool volatile g_fDoneCleanup = false;