创建grpc客户端请求时使用了重复的字段导致内存地址无效

在创建grpc客户端请求时，对于包含重复字段的结构体，需要使用grpc提供的RepeatField方法来将其转化为grpc支持的格式。以下是示例代码：

import (
	"context"
	"fmt"

	"github.com/golang/protobuf/proto"
	"google.golang.org/grpc"
)

// MyRequest contains a repeated field
type MyRequest struct {
	Values []int32 `protobuf:"varint,1,rep,name=values,proto3" json:"values,omitempty"`
}

// ToGRPC converts MyRequest to a GRPC supported structure
func (r *MyRequest) ToGRPC() *grpcRequest {
	return &grpcRequest{
		Values: r.Values,
	}
}

// MyResponse contains a repeated field
type MyResponse struct {
	Values []int32 `protobuf:"varint,1,rep,name=values,proto3" json:"values,omitempty"`
}

// FromGRPC converts GRPC response to MyResponse structure
func (r *MyResponse) FromGRPC(grpcResp *grpcResponse) error {
	r.Values = grpcResp.Values
	return nil
}

// GRPCMyService is the GRPC generated service
type GRPCMyService struct {
	client mygrpc.MyServiceClient
}

// NewGRPCMyService creates a new MyService instance with GRPC transport
func NewGRPCMyService(conn *grpc.ClientConn) *GRPCMyService {
	return &GRPCMyService{
		client: mygrpc.NewMyServiceClient(conn),
	}
}

// MyFunc calls server with MyRequest using GRPC transport
func (s *GRPCMyService) MyFunc(ctx context.Context, req *MyRequest) (*MyResponse, error) {
	grpcReq := req.ToGRPC()
	grpcResp, err := s.client.MyFunc(ctx, grpcReq)
	if err != nil {
		return nil, fmt.Errorf("failed to call GRPC server: %v", err)
	}
	resp := &MyResponse{}
	if err := resp.FromGRPC(grpcResp); err != nil {
		return nil, fmt.Errorf("failed to convert GRPC response: %v", err)
	}
	return resp, nil
}

// gRPC related structures generated