fix(second): back to second page

@@ -276,12 +276,21 @@ export default {
       });
     },
     backAction() {
-      this.$router.replace({
-        name: 'ProductDetail',
-        params: {
-          productId: this.productId
-        }
-      });
+      if (this.productId) {
+        this.$router.replace({
+          name: 'ProductDetail',
+          params: {
+            productId: this.productId
+          }
+        });
+      } else if (this.type === 'second') {
+        this.$router.replace({
+          name: 'SecondProductDetail',
+          params: {
+            skup: this.skup
+          }
+        });
+      }
     },
     async init() {
       this.fetchOrderAddress({ tabType: UserType.buy });