内贸空运，主单保存时查询旧数据的查询参数不对，改正

DSWeb/Areas/MvcShipping/Controllers/MsOpAirnController.cs

@@ -263,7 +263,7 @@ namespace DSWeb.MvcShipping.Controllers
                 var feecount = BasicDataRefDAL.GetExist("ch_fee", " BSNO='" + headData.BSNO + "' ");
 
                 if (feecount > 0) {
-                    var oldheadData = MsOpAirnDAL.GetData(" BSNO='" + headData.BSNO + "' ");
+                    var oldheadData = MsOpAirnDAL.GetData(" B.BSNO='" + headData.BSNO + "' ");
                     headData.BLFRT = oldheadData.BLFRT;
 
                     headData.PFREIGHT = oldheadData.PFREIGHT;