Modifiy hal_wrapper_close parameters
diff --git a/st21nfc/hal_wrapper.c b/st21nfc/hal_wrapper.c
index f517baf..8515238 100644
--- a/st21nfc/hal_wrapper.c
+++ b/st21nfc/hal_wrapper.c
@@ -79,7 +79,7 @@
   return 1;
 }
 
-int hal_wrapper_close(st21nfc_dev_t* dev, int call_cb) {
+int hal_wrapper_close(int call_cb) {
 
   STLOG_HAL_D("%s", __func__);