Fix coverity CID #1465797 - Negative loop bound in collect_deserializer

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12628)

diff --git a/crypto/encode_decode/decoder_pkey.c b/crypto/encode_decode/decoder_pkey.c
index 7f468c247685990bb8efbbf623c93b2c903277ef..e04b94de863fe5d2f0c986e29d66aab40b887c4e 100644 (file)
--- a/crypto/encode_decode/decoder_pkey.c
+++ b/crypto/encode_decode/decoder_pkey.c
@@ -289,6 +289,8 @@ static void collect_decoder(OSSL_DECODER *decoder, void *arg)
         return;
 
     data->error_occured = 1;         /* Assume the worst */
+    if (data->names == NULL)
+        return;
 
     end_i = sk_OPENSSL_CSTRING_num(data->names);
     for (i = 0; i < end_i; i++) {