Fixed a minor issue on crashed contracts

ethchain/block.go

@@ -221,8 +221,9 @@ func (block *Block) Undo() {
 
 func (block *Block) MakeContract(tx *Transaction) {
 	contract := MakeContract(tx, NewState(block.state))
-
-	block.contractStates[string(tx.Hash()[12:])] = contract.state
+	if contract != nil {
+		block.contractStates[string(tx.Hash()[12:])] = contract.state
+	}
 }
 
 /////// Block Encoding

ethchain/contract.go

 package ethchain
 
 import (
+	"fmt"
 	"github.com/ethereum/eth-go/ethutil"
 	"math/big"
 )
@@ -65,6 +66,8 @@ func MakeContract(tx *Transaction, state *State) *Contract {
 		state.trie.Update(string(addr), string(contract.RlpEncode()))
 
 		return contract
+	} else {
+		fmt.Println("NO CONTRACT")
 	}
 
 	return nil