SUNRPC: _shift_data_left/right_pages should check the shift length

Exit early if the shift is zero.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2020-12-07 13:30:46 -05:00
commit c54e959b36