Clean up EVPN NLRIs dissection.

Do the NLRI length checks in the switch cases for each route type, and
do them for *all* route types, rather than throwing a random check in
for one particular route type.

There is no need to fail up front for unknown route types; at least
dissect the type and length, and fail in the switch statement.

Dissect the route descriptor in each of the switch cases, after the
length check, rather than doing it up front.

Add a comment noting where the prefix route type comes from.

Change-Id: Iae26ecd467d4b36dbcf52e7998bd2881405281aa
Reviewed-on: https://code.wireshark.org/review/19774
Reviewed-by: Guy Harris <guy@alum.mit.edu>

0 files changed, 0 insertions, 0 deletions