check whether chain is addressable in tx builder

Author: luca-moser

builder/transaction_builder.go

@@ -167,7 +167,7 @@ func addReferentialUnlock(addr iotago.Address, unlocks iotago.Unlocks, pos int)
 }
 
 func addChainAsUnlocked(input iotago.Output, posUnlocked int, prevUnlocked map[string]int) {
-	if chainInput, is := input.(iotago.ChainConstrainedOutput); is {
+	if chainInput, is := input.(iotago.ChainConstrainedOutput); is && chainInput.Chain().Addressable() {
 		prevUnlocked[chainInput.Chain().ToAddress().Key()] = posUnlocked
 	}
 }