encoder: fix coverity 1473235: null dereference

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14618)

diff --git a/crypto/encode_decode/encoder_pkey.c b/crypto/encode_decode/encoder_pkey.c
index fc5a3914204a9b4a7632782e5bb6ab6cb07cc2ba..713aa44131a3d3f8234f6b453839976c6e9c2f04 100644 (file)
--- a/crypto/encode_decode/encoder_pkey.c
+++ b/crypto/encode_decode/encoder_pkey.c
@@ -261,7 +261,7 @@ static int ossl_encoder_ctx_setup_for_pkey(OSSL_ENCODER_CTX *ctx,
         }
     }
 
-    if (OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0) {
+    if (data != NULL && OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0) {
         if (!OSSL_ENCODER_CTX_set_construct(ctx, encoder_construct_pkey)
             || !OSSL_ENCODER_CTX_set_construct_data(ctx, data)
             || !OSSL_ENCODER_CTX_set_cleanup(ctx, encoder_destruct_pkey))