Turns out gtk these days sizes combo boxes with precisely enough space if packed to not expand, none of this mess is necessary any more. git-svn-id: svn://localhost/ardour2/branches/3.0@10790 d708f5d6-7413-0410-9779-e7cbd77b26cf
git-svn-id: svn://localhost/ardour2/branches/3.0@6430 d708f5d6-7413-0410-9779-e7cbd77b26cf
git-svn-id: svn://localhost/ardour2/branches/3.0@6411 d708f5d6-7413-0410-9779-e7cbd77b26cf