Dont accidentally remove a filesocket which is still in use. This gives problems when the DRM driver is loaded and the AIXGL extension is loaded , the AIXGL driver requests a drm_close and this will cause the radeon driver to fail while starting X windows.
Dont accidentally remove a filesocket which is still in use. This gives
problems when the DRM driver is loaded and the AIXGL extension is loaded
, the AIXGL driver requests a drm_close and this will cause the radeon
driver to fail while starting X windows.

PR:		kern/114688
Submitted by:	vehemens <vehemens at verizon dot net>
Prodded by:	Robert Noland
Approved by:	imp (mentor, a while ago already), anholt
MFC After:	1 week

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