修复因Query数据库异常导致数据库锁死的问题

DownKyi.Core/Storage/Database/Download/DownloadDb.cs

@@ -160,11 +160,11 @@ namespace DownKyi.Core.Storage.Database.Download
         {
             Dictionary<string, object> objects = new Dictionary<string, object>();
 
-            try
-            {
             dbHelper.ExecuteQuery(sql, reader =>
             {
                 while (reader.Read())
+                {
+                    try
                     {
                         // 读取字节数组
                         byte[] array = (byte[])reader["data"];
@@ -177,18 +177,17 @@ namespace DownKyi.Core.Storage.Database.Download
 
                         objects.Add((string)reader["id"], obj);
                     }
-                });
-            }
                     catch (Exception e)
                     {
                         Utils.Debugging.Console.PrintLine("Query()发生异常: {0}", e);
                         LogManager.Error($"{tableName}", e);
                     }
+                }
+            });
 
             return objects;
         }
 
-
         /// <summary>
         /// 如果表不存在则创建表
         /// </summary>