Add .Xr to libzip(3).

--HG--
branch : HEAD
diff --git a/man/zip_source_function.mdoc b/man/zip_source_function.mdoc
index 6b6e6a9..e5763cf 100644
--- a/man/zip_source_function.mdoc
+++ b/man/zip_source_function.mdoc
@@ -1,4 +1,4 @@
-.\" $NiH: zip_source_function.mdoc,v 1.6 2004/12/22 16:19:54 wiz Exp $
+.\" $NiH: zip_source_function.mdoc,v 1.7 2004/12/22 16:21:00 wiz Exp $
 .\"
 .\" zip_source_function.mdoc -- create data source from function
 .\" Copyright (C) 2004 Dieter Baron and Thomas Klausner
@@ -130,6 +130,7 @@
 Required memory could not be allocated.
 .El
 .Sh SEE ALSO
+.Xr libzip 3 ,
 .Xr zip_add 3 ,
 .Xr zip_replace 3 ,
 .Xr zip_source_buffer 3 ,