[openssl] OpenSSL_1_0_2-stable update

[nic.tuv at gmail.com]

The branch OpenSSL_1_0_2-stable has been updated
       via  0159a1bb41b385a00836e9e7baeadad2f014b788 (commit)
      from  4e545c6a256fb1ab08cc5a3aabb00963dac3191b (commit)


- Log -----------------------------------------------------------------
commit 0159a1bb41b385a00836e9e7baeadad2f014b788
Author: Cesar Pereida Garcia <cesar.pereidagarcia at tut.fi>
Date:   Thu Sep 12 17:09:51 2019 +0300

    [crypto/asn1/x_bignum.c] Explicit test against NULL
    
    As a fixup to https://github.com/openssl/openssl/pull/9779 to better
    conform to the project code style guidelines, this commit amends the
    original changeset to explicitly test against NULL, i.e. writing
    
    ```
    if (p != NULL)
    ```
    
    rather than
    
    ```
    if (!p)
    ```
    
    (This is a backport of https://github.com/openssl/openssl/pull/9881)
    
    Reviewed-by: Nicola Tuveri <nic.tuv at gmail.com>
    Reviewed-by: Matt Caswell <matt at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/9882)

-----------------------------------------------------------------------

Summary of changes:
 crypto/asn1/x_bignum.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/crypto/asn1/x_bignum.c b/crypto/asn1/x_bignum.c
index c644199c9f..f2de3de4de 100644
--- a/crypto/asn1/x_bignum.c
+++ b/crypto/asn1/x_bignum.c
@@ -102,7 +102,7 @@ ASN1_ITEM_end(CBIGNUM)
 static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
 {
     *pval = (ASN1_VALUE *)BN_new();
-    if (*pval)
+    if (*pval != NULL)
         return 1;
     else
         return 0;
@@ -110,7 +110,7 @@ static int bn_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
 
 static void bn_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
 {
-    if (!*pval)
+    if (*pval == NULL)
         return;
     if (it->size & BN_SENSITIVE)
         BN_clear_free((BIGNUM *)*pval);
@@ -124,7 +124,7 @@ static int bn_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
 {
     BIGNUM *bn;
     int pad;
-    if (!*pval)
+    if (*pval == NULL)
         return -1;
     bn = (BIGNUM *)*pval;
     /* If MSB set in an octet we need a padding byte */