Fix uninitialized stack data in the periodic ping payload

src/ControlStream.c

@@ -1392,7 +1392,7 @@ static void lossStatsThreadFunc(void* context) {
         char periodicPingPayload[8];
 
         BbInitializeWrappedBuffer(&byteBuffer, periodicPingPayload, 0, sizeof(periodicPingPayload), BYTE_ORDER_LITTLE);
-        BbPut16(&byteBuffer, 4); // Length of payload
+        BbPut32(&byteBuffer, 4); // Length of payload
         BbPut32(&byteBuffer, 0); // Timestamp?
 
         while (!PltIsThreadInterrupted(&lossStatsThread)) {