If opendir failed then closedir was passed NULL which is
erroneous. Caught by clang-tidy.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/trace-event-info.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 319ccf09a435..c8755679281e 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -313,7 +313,8 @@ static int record_event_files(struct tracepoint_path *tps)
 	}
 	err = 0;
 out:
-	closedir(dir);
+	if (dir)
+		closedir(dir);
 	put_tracing_file(path);
 
 	return err;
-- 
2.42.0.609.gbb76f46606-goog