tests: cleanup destroytest.c

Signed-off-by: 2xsec <dh48.jeong@samsung.com>

src/tests/destroytest.c

@@ -37,24 +37,30 @@ static int create_container(void)
 		perror("fork");
 		return -1;
 	}
+
 	if (pid == 0) {
 		execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL);
 		exit(EXIT_FAILURE);
 	}
+
 again:
 	ret = waitpid(pid, &status, 0);
 	if (ret == -1) {
 		if (errno == EINTR)
 			goto again;
+
 		perror("waitpid");
 		return -1;
 	}
+
 	if (ret != pid)
 		goto again;
+
 	if (!WIFEXITED(status))  { // did not exit normally
 		fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__);
 		return -1;
 	}
+
 	return WEXITSTATUS(status);
 }
 
@@ -96,6 +102,7 @@ int main(int argc, char *argv[])
 
 	fprintf(stderr, "all lxc_container tests passed for %s\n", c->name);
 	ret = 0;
+
 out:
 	lxc_container_put(c);
 	exit(ret);