Do not invoke anti-DoS system for invalid BIP16 transactions
Do not invoke anti-DoS system for invalid BIP16 transactions

Doing so would allow an attack on old nodes, which would relay a
standard transaction spending a BIP16 output in an invalid way,
until reaching a new node, which will disconnect their peer.

Reported by makomk on IRC.

syscoin/syscoin,Infernoman/crowncoin,syscoin/syscoin,domob1812/crowncoin,Earlz/dobbscoin-source,domob1812/crowncoin,Crowndev/crowncoin,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,dobbscoin/dobbscoin-source,Crowndev/crowncoin,syscoin/syscoin,Infernoman/crowncoin,Earlz/dobbscoin-source,Crowndev/crowncoin,Crowndev/crowncoin,wiggi/fairbrix-0.6.3,Infernoman/crowncoin,syscoin/syscoin,Crowndev/crowncoin,wiggi/fairbrix-0.6.3,wiggi/fairbrix-0.6.3,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,syscoin/syscoin,wiggi/fairbrix-0.6.3,dobbscoin/dobbscoin-source,domob1812/crowncoin,Infernoman/crowncoin,syscoin/syscoin,domob1812/crowncoin,Earlz/dobbscoin-source,Infernoman/crowncoin,Crowndev/crowncoin,wiggi/fairbrix-0.6.3,syscoin/syscoin,Infernoman/crowncoin,domob1812/crowncoin,domob1812/crowncoin,syscoin/syscoin,dobbscoin/dobbscoin-source