Remove s:searchpos; use winrestview instead of ``

`s:searchpos` is redundant; the subsequent `winrestview(s:view)` suffices.

You partially switched from ``` `` ``` to `winrestview` in f4f654dff6e6e23759996515a3cd5b1c5ec6d4bd; not sure if there was a reason for keeping the other ``m` `` and ``` `` ```.