LU-4629 llite: Fix uninitialized variable

LU-4629 llite: Fix uninitialized variable

'f.f_flags' might be used uninitialized in this function.

xattr.c:248: 'f.f_flags' is declared.
xattr.c:244: lump!= ( (void* )0) is true
xattr.c:254: 'f.f_flags' is used, but is uninitialized.

Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Change-Id: I99a3679b99f2980b6e78ebfb32dfa34e047c9756
Reviewed-on: http://review.whamcloud.com/10663
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>