violation while stop chans

lighthub/main.cpp

@@ -182,8 +182,10 @@ if (configLocked)
 debugSerial<<F("Stopping channels ...")<<endl;
 timerHandlerBusy++;
 //Stoping the channels
+if (items)
+{
 aJsonObject * item = items->child;
-while (items && item)
+    while (item)
     {
         if (item->type == aJson_Array && aJson.getArraySize(item)>0)
         {
@@ -196,6 +198,7 @@ while (items && item)
             }
         item = item->next;
         }
+    } 
 }
 pollingItem = NULL;
 debugSerial<<F("Stopped")<<endl;