优化库存导出

AutoTurnOver.Services/DailyServices.cs

@@ -174,15 +174,13 @@ namespace AutoTurnOver.Services
                     stream.CopyTo(memory);
                 }
                 memory.Position = 0;
+                export_count--;
                 return memory;
             }
             catch (Exception)
             {
-                throw;
-            }
-            finally
-            {
                 export_count--;
+                throw;
             }
            
         }