Add missing RETURN VALUES section.

From Paul Yang via OpenSSL commit 1f13ad31 Dec 25 17:50:39 2017 +0800
with one tweak.

1 files changed, 15 insertions, 4 deletions

diff --git a/lib/libcrypto/man/ASN1_STRING_print_ex.3 b/lib/libcrypto/man/ASN1_STRING_print_ex.3
index 74ddc9703cb..356a0a3efcf 100644
--- a/lib/libcrypto/man/ASN1_STRING_print_ex.3
+++ b/lib/libcrypto/man/ASN1_STRING_print_ex.3
@@ -1,6 +1,6 @@
-.\"	$OpenBSD: ASN1_STRING_print_ex.3,v 1.8 2017/08/20 15:44:22 schwarze Exp $
-.\"	OpenSSL ASN1_STRING_print_ex.pod a95d7574 Jul 2 12:16:38 2017 -0400
-.\"	OpenSSL ASN1_STRING_print_ex.pod bb9ad09e Jun 6 00:43:05 2016 -0400
+.\" $OpenBSD: ASN1_STRING_print_ex.3,v 1.9 2018/02/12 16:04:50 schwarze Exp $
+.\" full merge up to: OpenSSL bb9ad09e Jun 6 00:43:05 2016 -0400
+.\" selective merge up to: OpenSSL 61f805c1 Jan 16 01:01:46 2018 +0800
 .\"
 .\" This file was written by Dr. Stephen Henson.
 .\" Copyright (c) 2002, 2004, 2007, 2013, 2016, 2017 The OpenSSL Project.
@@ -50,7 +50,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 20 2017 $
+.Dd $Mdocdate: February 12 2018 $
 .Dt ASN1_STRING_PRINT_EX 3
 .Os
 .Sh NAME
@@ -208,5 +208,16 @@ It is equivalent to
 .Dv ASN1_STRFLGS_UTF8_CONVERT |
 .Dv ASN1_STRFLGS_DUMP_UNKNOWN |
 .Dv ASN1_STRFLGS_DUMP_DER .
+.Sh RETURN VALUES
+.Fn ASN1_STRING_print_ex
+and
+.Fn ASN1_STRING_print_ex_fp
+return the number of characters written or \-1 if an error occurred.
+.Pp
+.Fn ASN1_STRING_print
+returns 1 on success or 0 on error.
+.Pp
+.Fn ASN1_tag2str
+returns a static string.
 .Sh SEE ALSO
 .Xr X509_NAME_print_ex 3