fix remained traffic in info

Co-Authored-By: Alireza Ahmadi <alireza7@gmail.com>

web/html/xui/inbound_info_modal.html

@@ -143,7 +143,7 @@
             <tr>
                 <td>
                     <a-tag v-if="infoModal.clientStats && infoModal.clientSettings.totalGB > 0" :color="statsColor(infoModal.clientStats)">
-                        [[ sizeFormat(infoModal.clientSettings.totalGB - infoModal.clientStats.up - infoModal.clientStats.down) ]]
+                        [[ getRemStats() ]]
                     </a-tag>
                 </td>
                 <td>
@@ -423,7 +423,11 @@
             },
             statsColor(stats) {
                 return usageColor(stats.up + stats.down, app.trafficDiff, stats.total);
-            }
+            },
+            getRemStats() {
+                remained = this.infoModal.clientStats.total - this.infoModal.clientStats.up - this.infoModal.clientStats.down;
+                return remained>0 ? sizeFormat(remained) : '-';
+            },
         },
         
     });