[Patch] utmpname(3) returns int instead of void

[WANG Cong <xiyou.wangcong-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

As pointed by Halesh S, utmpname(3) should return int, just like what it is
in glibc's source code.

Signed-off-by: WANG Cong <wangcong-va7F5g4oNmbYtjvyW6yDsg@public.gmane.org>
Cc: Halesh S <halesh.s-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

---
Index: man-pages-3.01/man3/getutent.3
===================================================================
--- man-pages-3.01.orig/man3/getutent.3
+++ man-pages-3.01/man3/getutent.3
@@ -44,7 +44,7 @@ getutent, getutid, getutline, pututline,
 .br
 .B void endutent(void);
 .sp
-.BI "void utmpname(const char *" file );
+.BI "int utmpname(const char *" file );
 .SH DESCRIPTION
 .BR utmpname ()
 sets the name of the utmp-format file for the other utmp
@@ -116,6 +116,10 @@ and
 return a pointer to a \fIstruct utmp\fP on success, and NULL on failure.
 This \fIstruct utmp\fP is allocated in static storage, and may be
 overwritten by subsequent calls.
+.br
+.BR utmpname()
+returns a value of 0 if the new name was successfully stored, and a
+value of -1 to indicate an error.
 .SH FILES
 /var/run/utmp	database of currently logged-in users
 .br
--
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