Fix a documentation bug i introduced that tb@ pointed out:

X509_policy_check(3) never returns 2.
If validation succeeds, it always returns 1.

Author: schwarze

src/lib/libcrypto/man/X509_policy_check.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: X509_policy_check.3,v 1.3 2021/07/28 14:00:33 schwarze Exp $
+.\" $OpenBSD: X509_policy_check.3,v 1.4 2021/07/29 12:39:47 schwarze Exp $
 .\"
 .\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: July 28 2021 $
+.Dd $Mdocdate: July 29 2021 $
 .Dt X509_POLICY_CHECK 3
 .Os
 .Sh NAME
@@ -158,17 +158,8 @@ In the special cases that the
 .Fa certs
 argument contains exactly one certificate or that
 .Dv X509_V_FLAG_EXPLICIT_POLICY
-was not requested and the resulting policy tree would have been empty,
-.Pf * Fa ptree
-is set to
-.Dv NULL
-and
-.Pf * Fa pexplicit_policy
-to 0.
-.It 2
-.Dv X509_V_FLAG_EXPLICIT_POLICY
 was not requested and at least one of the certificates contains no
-certificate policies.
+certificate policies or the resulting policy tree would have been empty,
 .Pf * Fa ptree
 is set to
 .Dv NULL