[openssl] OpenSSL_1_1_1-stable update

[Richard Levitte]

The branch OpenSSL_1_1_1-stable has been updated
       via  20a8bce4bb70a3c4bfc69035c703fcdf8dcbc6cf (commit)
      from  1913df42336ab90e2f6d6c21de186f64c409e8e5 (commit)


- Log -----------------------------------------------------------------
commit 20a8bce4bb70a3c4bfc69035c703fcdf8dcbc6cf
Author: Shane Lontis <shane.lontis at oracle.com>
Date:   Wed Mar 20 08:13:55 2019 +1000

    Updated doc for BN_clear, BN_CTX_end when param is NULL
    
    Reviewed-by: Paul Dale <paul.dale at oracle.com>
    Reviewed-by: Richard Levitte <levitte at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/8532)
    
    (cherry picked from commit 138ef774fedb567b29d6e5a96541a396cadc6135)

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

Summary of changes:
 doc/man3/BN_CTX_start.pod | 1 +
 doc/man3/BN_new.pod       | 1 +
 2 files changed, 2 insertions(+)

diff --git a/doc/man3/BN_CTX_start.pod b/doc/man3/BN_CTX_start.pod
index 372da50..724398b 100644
--- a/doc/man3/BN_CTX_start.pod
+++ b/doc/man3/BN_CTX_start.pod
@@ -27,6 +27,7 @@ calls must be made before calling any other functions that use the
 B<ctx> as an argument.
 
 Finally, BN_CTX_end() must be called before returning from the function.
+If B<ctx> is NULL, nothing is done.
 When BN_CTX_end() is called, the B<BIGNUM> pointers obtained from
 BN_CTX_get() become invalid.
 
diff --git a/doc/man3/BN_new.pod b/doc/man3/BN_new.pod
index 08aae5e..7d40304 100644
--- a/doc/man3/BN_new.pod
+++ b/doc/man3/BN_new.pod
@@ -27,6 +27,7 @@ OPENSSL_secure_malloc(3) is used to store the value.
 BN_clear() is used to destroy sensitive data such as keys when they
 are no longer needed. It erases the memory used by B<a> and sets it
 to the value 0.
+If B<a> is NULL, nothing is done.
 
 BN_free() frees the components of the B<BIGNUM>, and if it was created
 by BN_new(), also the structure itself. BN_clear_free() additionally