Use sem_destroy instead sem_close

Sem_destroy is correct way to get rid of unnamed semaphore

Signed-off-by: Simon Egli <4662005+Deadolus@users.noreply.github.com>

Author: Deadolus

src/tpm2-provider-semaphore.c

@@ -68,7 +68,7 @@ int tpm2_semaphore_unlock(tpm2_semaphore_t sem)
 
 void tpm2_semaphore_free(tpm2_semaphore_t sem)
 {
-    sem_close(sem);
+    sem_destroy(sem);
     munmap(sem, sizeof(sem_t));
 }