lsns: don't call close(2) if unnecessary

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/sys-utils/lsns.c b/sys-utils/lsns.c
index b2913152bc57cec2bf20ac2221f67af22b798fcc..8cf95ad24a4616053f4d3a94f6daff3458ca0429 100644 (file)
--- a/sys-utils/lsns.c
+++ b/sys-utils/lsns.c
@@ -333,7 +333,7 @@ static int get_parent_ns_ino(int fd, enum lsns_type lsns_type, ino_t *pino, int
                *pino = st.st_ino;
        }
 
-       if (pfd == &my_fd)
+       if (pfd == &my_fd && *pfd >= 0)
                close(*pfd);
        return 0;
 }