Eliminates code that sets the link selector field in the header of
fragmented messages, since this information is never referenced.
(The unnecessary initialization was harmless as it was over-written
by the fragmented message identifier value before the fragments were
transmitted.)
Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>