Fixed compiler errors

App/Inc/tasks/dummy.hpp

@@ -15,6 +15,7 @@ namespace demo
 	class DummyTask : public sta::tacos::TacosThread {
 	public:
 		DummyTask(const char* name);
+		~DummyTask() override;
 
 		void init() override;
 

App/Src/tasks/dummy.cpp

@@ -19,6 +19,8 @@ namespace demo
 
 	}
 
+	DummyTask::~DummyTask(){}
+
 	void DummyTask::init()
 	{
 		STA_DEBUG_PRINTLN("Initialized dummy task!");