Fix download count cannot be zero

Triple-Z · Triple-Z · commit 55843bc7c63a · 2019-04-17T12:20:24.000+08:00
diff --git a/item/downloadCount.go b/item/downloadCount.go
@@ -77,7 +77,7 @@ func MinusDownloadCount(c *gin.Context) {
 
 		// 下载次数--
 		singleItem.DownCount -= 1
-		if singleItem.DownCount <= 0 {
+		if singleItem.DownCount < 0 {
 			// 删除文件
 			err := DeleteItem(singleItem.Bucket, singleItem.Path)
 			if err != nil {
