free NULL cleanup

[openssl.git] / doc / crypto / DH_new.pod

diff --git a/doc/crypto/DH_new.pod b/doc/crypto/DH_new.pod
index 60c930093e02f095ab89379071defeb362ff0057..6245e4adaf7587a4a2f1137692e6d6872025dafa 100644 (file)
--- a/doc/crypto/DH_new.pod
+++ b/doc/crypto/DH_new.pod
@@ -18,6 +18,7 @@ DH_new() allocates and initializes a B<DH> structure.
 
 DH_free() frees the B<DH> structure and its components. The values are
 erased before the memory is returned to the system.
+If B<dh> is NULL nothing is done.
 
 =head1 RETURN VALUES