Two functions can return errors here, not just one.

src/lib/libc/stdlib/qsort.3

@@ -33,7 +33,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: qsort.3,v 1.7 2001/10/29 18:10:49 deraadt Exp $
+.\"	$OpenBSD: qsort.3,v 1.8 2001/12/29 02:35:37 miod Exp $
 .\"
 .Dd June 4, 1993
 .Dt QSORT 3
@@ -162,7 +162,9 @@ is set to indicate the error.
 .Sh ERRORS
 The
 .Fn heapsort
-function succeeds unless:
+and
+.Fn mergesort
+functions succeed unless:
 .Bl -tag -width Er
 .It Bq Er EINVAL
 The