pfg 421f11cda0 pax(1): Fix a bug with archives smaller than 512 bytes.
The problem here is that the archive is too short (< 512 bytes). The
buffer routines, try to read at least 512 bytes, even when we try to
determine what format file we have, which is wrong.

Obtained from:	NetBSD (CVS rev 1.26)
MFC after:	5 days
2016-12-21 15:26:59 +00:00
..
2016-11-13 00:11:30 +00:00
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MFH
2016-04-12 17:00:13 +00:00
MFH
2016-03-02 16:14:46 +00:00
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