Avoid use-of-uninitialized in i2r_IPAddrBlocks()

Reported by Viktor Szakats in
https://github.com/libressl/portable/issues/910

ok job

1 files changed, 8 insertions, 1 deletions

diff --git a/src/lib/libcrypto/x509/x509_addr.c b/src/lib/libcrypto/x509/x509_addr.c
index 2d8cc0b318..0506fe3a64 100644
--- a/src/lib/libcrypto/x509/x509_addr.c
+++ b/src/lib/libcrypto/x509/x509_addr.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: x509_addr.c,v 1.86 2023/02/16 08:38:17 tb Exp $ */
+/*      $OpenBSD: x509_addr.c,v 1.87 2023/09/06 15:32:54 tb Exp $ */
 /*
  * Contributed to the OpenSSL Project by the American Registry for
  * Internet Numbers ("ARIN").
@@ -413,6 +413,13 @@ IPAddressFamily_afi_safi(const IPAddressFamily *af, uint16_t *out_afi,
         uint8_t safi = 0;
         int got_safi = 0;
 
+        if (out_afi != NULL)
+                *out_afi = 0;
+        if (out_safi != NULL) {
+                *out_safi = 0;
+                *safi_is_set = 0;
+        }
+
         CBS_init(&cbs, af->addressFamily->data, af->addressFamily->length);
 
         if (!CBS_get_u16(&cbs, &afi))