nfsd: return 0 on reads of fault injection files
nfsd: return 0 on reads of fault injection files

debugfs read operations were returning the contents of an uninitialized u64.

Signed-off-by: Weston Andros Adamson <2782014720c8dba08f7eb23e9f1d190c445c0c94@netapp.com>
Signed-off-by: J. Bruce Fields <51738506c1b2ccb0761f23bdc612c93babf738ea@redhat.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas