[pnfs] getdeviceinfo stack corruption fix + minor memory fixes

[Tigran Mkrtchyan]

finally fix it!
git recipe didn't work for me ( wrong git version ). Patches attached.

Regards,
	Tigran.

________________________________________________________________________
Tigran Mkrtchyan                               DESY, IT,
tigran.mkrtchyan at desy.de                       Notkestrasse 85,
Tel: + 49 40 89983946                          Hamburg 22607,
Fax: + 49 40 89984429                          Germany.
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