Missing case in ktm_basic

[d1jang]

When the tactic faces with this goal:

KTraceMatch (KTP_NegClass (KAP_KRecv MP_M :: nil))
(KRecv c (BadTag tag) :: nil)

It applies KTM_NegClass, and results in the following goal :

forall kap : KActionPat,
In kap (KAP_KRecv MP_M :: nil) ->
~ KActionMatch kap (KRecv c (BadTag tag))

But ktm_basic doesn't deal with this shape of goal.