In "show_fragment()", use common code to put the top-level entry into

In "show_fragment()", use common code to put the top-level entry into
the protocol tree for the fragment, regardless of whether the fragment
has any flags set or not, and, in that common code, handle fragments
with 0 bytes of data specially (at least in NDS, you can get zero-length
fragments - including the last fragment, so you can't just ignore those
fragments; the last fragment has to be added to finish off the
reassembly).

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@11198 f5534014-38df-0310-8fa8-9805f1628bb7