奖品库内优惠券跳转判断调整

pages/prize/detail.vue

@@ -15,7 +15,7 @@
 					</view>
 				</view>
 			</view>
-			<view class="flex detail-code" v-if = " funUseArea() == 0">
+			<view class="flex detail-code" v-if = " funUseArea() != 4">
 				<canvas style="width: 220px;height: 220px;" canvas-id="couponQrcode"></canvas>
 			</view>
 			<view class="detail-explain">