Fix unset_find params
Fix unset_find params

Merge conflict with recent work to implement cancel_selection

fuchsia-mirror/third_party-xi-editor,google/xi-editor,google/xi-editor,fuchsia-mirror/third_party-xi-editor,google/xi-editor,google/xi-editor,fuchsia-mirror/third_party-xi-editor,fuchsia-mirror/third_party-xi-editor