Detach submenu before its parent is destroyed. Fixes #3134.
commit499b2b5047ec7bc4bb9c740828940e2aa281f860
authorcarlh <carlh@d708f5d6-7413-0410-9779-e7cbd77b26cf>
Sun, 16 May 2010 18:04:47 +0000 (16 18:04 +0000)
committercarlh <carlh@d708f5d6-7413-0410-9779-e7cbd77b26cf>
Sun, 16 May 2010 18:04:47 +0000 (16 18:04 +0000)
tree9ba18aa2e16c123858c10da7012577e01fb45c8b
parentf81b8e0f8db1fe7474608eab98d3dde73b2e8cc3
Detach submenu before its parent is destroyed.  Fixes #3134.

git-svn-id: svn+ssh://ardour.org/ardour2/branches/3.0@7106 d708f5d6-7413-0410-9779-e7cbd77b26cf
gtk2_ardour/midi_time_axis.cc