[PATCH v2] selftests/rtc:Fix a resource leak

[Zhu Jun]

The opened file should be closed before exit, otherwise resource leak
will occur that this problem was discovered by code reading

Signed-off-by: Zhu Jun <zhujun2@xxxxxxxxxxxxxxxxxxxx>
---
>From a good programming practice perspective, especially in more complex programs, 
explicitly freeing allocated memory is a good habit!


 tools/testing/selftests/rtc/setdate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/rtc/setdate.c b/tools/testing/selftests/rtc/setdate.c
index b303890b3de2..17a00affb0ec 100644
--- a/tools/testing/selftests/rtc/setdate.c
+++ b/tools/testing/selftests/rtc/setdate.c
@@ -65,6 +65,7 @@ int main(int argc, char **argv)
 	retval = ioctl(fd, RTC_RD_TIME, &current);
 	if (retval == -1) {
 		perror("RTC_RD_TIME ioctl");
+		close(fd);
 		exit(errno);
 	}
 
-- 
2.17.1