wrap it in a BBufferIO. Makes the code cleaner.
* Check if source is a BFile and propagate InitCheck() of
the BFile. When trying to open a BMediaFile on a non-existant
file, it will correctly say the file does not exist instead
that there is no handler for it. (IIRC there is a ticket
for this.)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38760 a95241bf-73f2-0310-859d-f6bbb57e9c96