queue fix

src/Queue.h

@@ -17,7 +17,7 @@ class Queue {
 	std::mutex mutex;
 	void run() {
 		while (!QApplication::closingDown()){
-			if (!isEmpty())
+			if (tail != head)
 				update();
 			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 		}
@@ -29,9 +29,6 @@ class Queue {
 	size_t head = 0;
 	T * container[MAX_QUEUE_SIZE];
 protected:
-	bool isEmpty() const {
-		return tail == head;
-	}
 	T * pop(){
 		mutex.lock();
 		T * element = container[head];