policycoreutils: setfiles: Fix potential crash using dereferenced ftsent

If fts_read() fails for any reason ftsent will be NULL.  Previously we
would have reported the error and then continued processing.  Now we
report the error and stop using the NULL pointer.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Dan Walsh <dwalsh@redhat.com>
1 file changed