Manuel Pégourié-Gonnard 0b23f167ba SSL: rework restart state handling ...

As done by previous commits for ECC and ECDSA:
- use explicit state assignments rather than increment
- always place the state update right before the operation label

This will make it easier to add restart support for other operations later if
desired.

SSL-specific changes:
- remove useless states: when the last restartable operation on a message is
  complete, ssl->state is incremented already, so we don't need any additional
state update: ecrs_state is only meant to complement ssl->state
- rename remaining states consistently as <message>_<operation>
- move some labels closer to the actual operation when possible (no assignment
  to variables used after the label between its previous and current position)

2017-08-24 12:08:33 +02:00

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