修复PDF保存时，Special Price不正确。

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

@@ -10320,7 +10320,7 @@ NSString* gprice = [self get_portfolio_price :appDelegate.contact_id item_id:ite
         }
         NSString *discount_null = [self textAtColumn:2 statement:stmt];
         if (![discount_null isEqualToString:@"null"]) {
-            price = price * (1 - discount);
+            price = price * (1 - discount / 100.0);
         }