[PATCH] perf namespaces: check newns before free

[zhangjiao2]

From: zhang jiao <zhangjiao2@xxxxxxxxxxxxxxxxxxxx>

Since newns can be NULL, check it before free

Signed-off-by: zhang jiao <zhangjiao2@xxxxxxxxxxxxxxxxxxxx>
---
 tools/perf/util/namespaces.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/namespaces.c b/tools/perf/util/namespaces.c
index cb185c5659d6..49e20e0a567a 100644
--- a/tools/perf/util/namespaces.c
+++ b/tools/perf/util/namespaces.c
@@ -135,7 +135,8 @@ int nsinfo__init(struct nsinfo *nsi)
 			       &RC_CHK_ACCESS(nsi)->in_pidns, spath);
 
 out:
-	free(newns);
+	if (newns)
+		free(newns);
 	return rv;
 }
 
-- 
2.33.0