ext4: remove unnecessary lock/unlock of i_block_reservation_lock
ext4: remove unnecessary lock/unlock of i_block_reservation_lock

This is a leftover of commit 71d4f7d032149b935a26eb3ff85c6c837f3714e1

Signed-off-by: Maurizio Lombardi <954d0c936553fa022eb0631b7a3a263f1388ea3d@redhat.com>
Signed-off-by: Theodore Ts'o <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>
Reviewed-by: Lukas Czerner <6c9141d0e2318b390a8a6bf8ecd9f819d16f05b4@redhat.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs