Merge pull request expanse-org#22 from happyuc-project/huc/v0.0.2

drop tx when which opcode invalid

Author: ldcc

miner/worker.go

@@ -584,7 +584,7 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB
 			// Strange error, discard the transaction and get the next in line (note, the
 			// nonce-too-high clause will prevent us from executing in vain).
 			log.Warn("Transaction failed, account skipped", "hash", tx.Hash(), "err", err)
-			txs.Shift()
+			txs.Pop()
 		}
 	}