Fix typo in example code.
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@ -1,4 +1,4 @@
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.\" $NetBSD: bufferio.9,v 1.13 2015/03/30 13:58:03 riastradh Exp $
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.\" $NetBSD: bufferio.9,v 1.14 2015/03/30 13:58:28 riastradh Exp $
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.\"
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.\" Copyright (c) 2015 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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@ -244,7 +244,7 @@ for (i = 0; i < nsegs; i++) {
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
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error = VOP_BMAP(vp, i*segsz, &devvp, &blkno, NULL);
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VOP_UNLOCK(vp);
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if (error == 0 && nbn == -1)
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if (error == 0 && blkno == -1)
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error = EIO;
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if (error) {
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/* Give up early, don't try to handle holes. */
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