增加ip2region下载db错误处理

ipgeo/ip2region.go

@@ -23,14 +23,24 @@ func downloadDataBase() error {
 	if err != nil {
 		return err
 	}
-	defer resp.Body.Close()
+	defer func(Body io.ReadCloser) {
+		err := Body.Close()
+		if err != nil {
+			panic(err)
+		}
+	}(resp.Body)
 
 	// Create the file
 	out, err := os.Create(ipDataBasePath)
 	if err != nil {
 		return err
 	}
-	defer out.Close()
+	defer func(out *os.File) {
+		err := out.Close()
+		if err != nil {
+			panic(err)
+		}
+	}(out)
 
 	// Write the body to file
 	_, err = io.Copy(out, resp.Body)