fix heap leaks in test app

Signed-off-by: Aidan Hahn <aidan@aidanis.online>

tests/log_test.c

@@ -56,6 +56,11 @@ int main() {
       perror("cannot increment semaphore");
       return 1;
     }
+
+    // clean up
+    sem_close(sem);
+    deinit_alog();
+
   // parent process
   } else {
     // we can do checks from here