fix: 调整小计计算方式

pages/mobile/center/user/btobarCheck.vue

@@ -232,7 +232,7 @@
               </div>
               <div class="clearfix" style="border-top:1px solid #D9D9D9;padding: 0 0.15rem;line-height: 0.8rem" >
                 <div class="fl" style="font-size: 0.26rem">小计：</div>
-                <div class="fr" style="color: #FF3208;font-size: 0.26rem">{{(item.qty || 0) * (item.orderprice || 0) | computeNum(2)}}</div>
+                <div class="fr" style="color: #FF3208;font-size: 0.26rem">{{(item.thischeckqty || 0) * (item.orderprice || 0) | computeNum(2)}}</div>
               </div>
             </div>
           </div>

pages/mobile/center/vendor/btobapCheck.vue

@@ -236,7 +236,7 @@
               </div>
               <div class="clearfix" style="border-top:1px solid #D9D9D9;padding: 0 0.15rem;line-height: 0.8rem" >
                 <div class="fl" style="font-size: 0.26rem">小计：</div>
-                <div class="fr" style="color: #FF3208;font-size: 0.26rem">{{(item.qty || 0) * (item.orderprice || 0) | computeNum(2)}}</div>
+                <div class="fr" style="color: #FF3208;font-size: 0.26rem">{{(item.thischeckqty || 0) * (item.orderprice || 0) | computeNum(2)}}</div>
               </div>
             </div>
           </div>