[PATCH 2/2] cert: Fix uninitialised variable

In file included from ./ell/util.h:20,
                 from ell/private.h:8,
                 from ell/cert.c:18:
In function '_l_l_free_cleanup',
    inlined from 'cert_set_filter_by_validity' at ell/cert.c:618:33,
    inlined from 'l_certchain_verify' at ell/cert.c:729:20:
./ell/util.h:257:21: warning: 'valid' may be used uninitialized [-Wmaybe-uninitialized]
  257 | DEFINE_CLEANUP_FUNC(l_free);
ell/cert.c: In function 'l_certchain_verify':
ell/cert.c:618:40: note: 'valid' was declared here
  618 |         _auto_(l_free) struct l_cert **valid;
      |                                        ^~~~~
---
 ell/cert.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ell/cert.c b/ell/cert.c
index ac9bdb7ee9e2..ad0d91c5f073 100644
--- a/ell/cert.c
+++ b/ell/cert.c
@@ -615,7 +615,7 @@ static struct l_cert **cert_set_filter_by_validity(struct l_queue *set,
 							int *out_valid)
 {
 	const struct l_queue_entry *entry;
-	_auto_(l_free) struct l_cert **valid;
+	_auto_(l_free) struct l_cert **valid = NULL;
 
 	*out_total = l_queue_length(set);
 	*out_valid = 0;
-- 
2.54.0