Fix two pr sctp bugs.
Fix two pr sctp bugs.

1) Slide the mapping array at the end of the procedure.
2) Make sure when looking to advance the peer ack point
   that you allow the FWD-TSN to slide over acked packets too.

sdd330/sctp-refimpl,TopPano/sctp-refimpl,TopPano/sctp-refimpl,sctplab/sctp-refimpl,gale320/sctp-refimpl,sdd330/sctp-refimpl,deepak899/sctp-refimpl,TopPano/sctp-refimpl,sctplab/sctp-refimpl,deepak899/sctp-refimpl,sdd330/sctp-refimpl,gale320/sctp-refimpl,tosakanth/sctp-refimpl,TopPano/sctp-refimpl,TopPano/sctp-refimpl,TopPano/sctp-refimpl,sdd330/sctp-refimpl,sctplab/sctp-refimpl,gale320/sctp-refimpl,sctplab/sctp-refimpl,xwhuang/sctp-refimpl,tosakanth/sctp-refimpl,timsuchanek/sctp-refimpl,timsuchanek/sctp-refimpl,tosakanth/sctp-refimpl,tosakanth/sctp-refimpl,sctplab/sctp-refimpl,xwhuang/sctp-refimpl,tosakanth/sctp-refimpl,sdd330/sctp-refimpl,deepak899/sctp-refimpl,timsuchanek/sctp-refimpl,timsuchanek/sctp-refimpl,xwhuang/sctp-refimpl,sdd330/sctp-refimpl,gale320/sctp-refimpl,deepak899/sctp-refimpl,deepak899/sctp-refimpl,gale320/sctp-refimpl,deepak899/sctp-refimpl,xwhuang/sctp-refimpl,tosakanth/sctp-refimpl,gale320/sctp-refimpl,tosakanth/sctp-refimpl,tosakanth/sctp-refimpl,sdd330/sctp-refimpl,timsuchanek/sctp-refimpl,gale320/sctp-refimpl,gale320/sctp-refimpl,sdd330/sctp-refimpl,xwhuang/sctp-refimpl,timsuchanek/sctp-refimpl,gale320/sctp-refimpl,TopPano/sctp-refimpl,TopPano/sctp-refimpl,timsuchanek/sctp-refimpl,sdd330/sctp-refimpl,timsuchanek/sctp-refimpl,timsuchanek/sctp-refimpl,tosakanth/sctp-refimpl,sctplab/sctp-refimpl,xwhuang/sctp-refimpl,TopPano/sctp-refimpl