crypto/bn: fix return value in BN_generate_prime

When the ret parameter is NULL the generated prime
is in rnd variable and not in ret.

CLA: trivial

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8076)

(cherry picked from commit 3d43f9c809e42b960be94f2f4490d6d14e063486)

diff --git a/crypto/bn/bn_depr.c b/crypto/bn/bn_depr.c
index 7d89214b1c16a1eddd9403e38d3ab989e53184ff..46ee0e9682a89729243b9dee19a7e924e8e118d9 100644 (file)
--- a/crypto/bn/bn_depr.c
+++ b/crypto/bn/bn_depr.c
@@ -40,7 +40,7 @@ BIGNUM *BN_generate_prime(BIGNUM *ret, int bits, int safe,
         goto err;
 
     /* we have a prime :-) */
-    return ret;
+    return rnd;
  err:
     BN_free(rnd);
     return NULL;