Fixed interface NPE

Author: fergarrui

src/main/java/net/nandgr/debugger/node/NodeService.java

@@ -1,6 +1,5 @@
 package net.nandgr.debugger.node;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import net.nandgr.debugger.node.request.json.DebugTraceTransactionRequest;
 import net.nandgr.debugger.node.request.json.GetCodeRequest;
@@ -16,7 +15,6 @@
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.util.EntityUtils;
 import java.io.IOException;
-import java.io.UnsupportedEncodingException;
 import java.util.*;
 
 public class NodeService {

src/main/java/net/nandgr/debugger/transformers/SolidityTransformer.java

@@ -97,6 +97,9 @@ public List<ContractObject> loadContracts() throws TransformException {
             }
 
             Contract contract = solcContracts.get(contractPath + ":" + cName);
+            if (contract == null) {
+                continue;
+            }
             List<Code> asmCode = contract.getAsm().getData().get("0").getCode();
             String code = contract.getBinRuntime();