fix tx pool interface called with wrong seq parameter

Author: wangchao

src/peersafe/app/consensus/PConsensus.h

@@ -581,7 +581,7 @@ PConsensus<Adaptor>::onViewChange()
 	timeOutCount_ = 0;
 
 	//clear avoid
-	adaptor_.app_.getTxPool().clearAvoid(previousLedger_.seq());
+	adaptor_.app_.getTxPool().clearAvoid(previousLedger_.seq() + 1);
 
 	viewChangeManager_.onViewChanged(view_);
 	if (bWaitingInit_)
@@ -796,7 +796,7 @@ PConsensus<Adaptor>::gotTxSet(
 			{
 				//update avoid if we got the right tx-set
                 if (adaptor_.validating())
-				    adaptor_.app_.getTxPool().updateAvoid(txSet, previousLedger_.seq());
+				    adaptor_.app_.getTxPool().updateAvoid(txSet, previousLedger_.seq() + 1);
 
 				auto set = txSet.map_->snapShot(false);
 				//this place has a txSet copy,what's the time it costs?