example code fix from Will Maier; ok otto

src/lib/libutil/fmt_scaled.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: fmt_scaled.3,v 1.4 2007/05/31 19:19:38 jmc Exp $
+.\"	$OpenBSD: fmt_scaled.3,v 1.5 2008/07/29 13:53:14 jmc Exp $
 .\" Copyright (c) 2001, 2003 Ian Darwin.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
@@ -23,7 +23,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: May 31 2007 $
+.Dd $Mdocdate: July 29 2008 $
 .Dt FMT_SCALED 3
 .Os
 .Sh NAME
@@ -85,7 +85,7 @@ was malformed, e.g., too many '.' characters.
 .Bd -literal -offset indent
 char *cinput = "1.5K";
 long long result;
-if (scan_scaled(cinput, &result) != 0)
+if (scan_scaled(cinput, &result) == 0)
 	printf("%s -> %ld\en", cinput, result);
 else
 	fprintf(stderr, "%s - invalid\en", cinput);