Fix a bug where the length of a FORWARD-TSN chunk was set incorrectly in the chunk. This resulted in malformed frames. Remove a duplicate assignment.
Fix a bug where the length of a FORWARD-TSN chunk was set incorrectly in
the chunk. This resulted in malformed frames.
Remove a duplicate assignment.

MFC after: 2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase