修复rpc error nil值问题

rpc/client.go

@@ -178,6 +178,7 @@ func (slf *Client) Run(){
 		}else  {
 			delete(slf.pending,respone.Seq)
 			slf.pendingLock.Unlock()
+			v.Err = nil
 			//*****如果对方返回nil，测试跨node时，调用其他服务rpc不存在的情况
 			if len(respone.Returns) >0 {
 				err = processor.Unmarshal(respone.Returns,v.Reply)

rpc/server.go

@@ -213,7 +213,12 @@ func (slf *Server) rpcHandlerGo(noReply bool,handlerName string,methodName strin
 
 	if noReply == false {
 		req.requestHandle = func(Returns interface{},Err *RpcError){
-			pCall.Err = Err
+			if Err!=nil {
+				pCall.Err = Err
+			}else{
+				pCall.Err = nil
+			}
+
 			pCall.done <- pCall
 		}
 	}
@@ -245,7 +250,12 @@ func (slf *Server) rpcHandlerAsyncGo(callerRpcHandler IRpcHandler,noReply bool,h
 
 	if noReply == false {
 		req.requestHandle = func(Returns interface{},Err *RpcError){
-			pCall.Err = Err
+			if Err == nil {
+				pCall.Err = nil
+			}else{
+				pCall.Err = Err
+			}
+
 			if Returns!=nil {
 				pCall.Reply = Returns
 			}