ig systemd could restart it if it exits with 0

src/main.c

@@ -175,14 +175,14 @@ int main(void) {
 
 	/* see if another instance is up, quit if it is */
 	if (get_instance_lock() < 0)
-		return 1;
+		return 0;
 
 	/* malloc memory for the struct */
 	struct sensors_t *sensors = malloc(sizeof(*sensors)); // no actual point in mallocing and it is ever so sligtly slower to access heap vs stack, but its cool
 	if (sensors == NULL) {
 		applog(LOG_ERR, "can't allocate mem for the sensor struct. You don't got %lu bytes bro?", sizeof(struct sensors_t));
 		free(sensors);
-		return 2;
+		return 1;
 	}
 	applog(LOG_INF, "sensor struct allocated, size is %lu bytes", sizeof(struct sensors_t));