Set the byte array to null after reading

library/src/main/java/com/frostnerd/vpntunnelproxy/TunnelHandle.kt

@@ -94,8 +94,9 @@ class TunnelHandle(proxy: Proxy,
     fun hasDataForDevice():Boolean = byteReadCounter != byteWriteCounter
 
     internal fun pollBytesToDevice():ByteArray? {
-        return (byteReadCounter++ % maxConcurrentAnswerSize).let {
-            byteOutput[it]
+        val index = byteReadCounter++ % maxConcurrentAnswerSize
+        return byteOutput[index].also {
+            byteOutput[index] = null
         }
     }