修复合并订单，选择合并到目的订单错误。

RedAnt ERP Mobile/common/Functions/offline/SelectUploadOrderViewController.m

@@ -122,10 +122,10 @@
         return;
     }
     
-    if (!self.mergeTo) {
-        [RAUtils message_alert:@"Please choose an order to copy information from." title:@"Warning" controller:self];
-        return;
-    }
+//    if (!self.mergeTo) {
+//        [RAUtils message_alert:@"Please choose an order to copy information from." title:@"Warning" controller:self];
+//        return;
+//    }
     
     __block NSMutableString *order_ids = [NSMutableString string];
     __block NSString *checked_id = nil;