only perform the updates if the fetch succeeds

doc/draft/update

@@ -7,14 +7,16 @@ do
 	fi
 	pat=`echo "$i" | sed 's/...txt/??.txt/'`
 	old=`echo $pat 2> /dev/null`
-	fetch "http://www.ietf.org/internet-drafts/$i" 
+	if fetch "http://www.ietf.org/internet-drafts/$i" 
-	cvs add "$1" 
-	if test "X$old" != "X$pat"
 	then
-		rm $old
+		cvs add "$1" 
-		cvs delete $old
+		if test "X$old" != "X$pat"
-	else
+		then
-		old=
+			rm $old
+			cvs delete $old
+		else
+			old=
+		fi
+		cvs commit -m "new draft" $i $old
 	fi
-	cvs commit -m "new draft" $i $old
 done