This fixes things so when raw-leaves are enabled a zero size file creates
a zero size raw leaf.  When raw-leaves are not enabled the hash created
changes from QmbFMke1KXqnYyBBWxB74N4c5SBnJMVAiMNRcGu6x1AwQH to
Qmdsf68UUYTSSx3i4GtDJfxzpAEZt7Mp23m3qa36LYMSiW, since the type field
changed from TFile to TRaw.

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>