GPS Sim: Fix destructor

src/platforms/posix/drivers/gpssim/gpssim.cpp

@@ -195,6 +195,8 @@ GPSSIM::GPSSIM(const char *uart_path, bool fake_gps, bool enable_sat_info) :
 
 GPSSIM::~GPSSIM()
 {
+	delete _Sat_Info;
+
 	/* tell the task we want it to go away */
 	_task_should_exit = true;