staging/lustre: Fix blank line before EXPORT_SYMBOL()

This patch fixes one checkpatch warning in lustre:
WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable

Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>