Nate Lawson 12957d4991 Revert the previous commit. The bus accessor macros do not check the
return value for BUS_READ_IVAR and thus don't generate the proper NULL
in cases where a device (i.e. on PCI) does not have a handle.

Found by:	peadar, tjr
2004-05-22 17:19:59 +00:00
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