[Ohrrpgce] SVN: teeemcee/12600 sliceedit: be more careful about not doing anything when state.need_upda

[subversion at HamsterRepublic.com]

teeemcee
2021-10-30 17:56:21 -0700 (Sat, 30 Oct 2021)
221
sliceedit: be more careful about not doing anything when state.need_update is true

There was a bad assumption that pressing Delete deletes a single slice, so it
left a lot of stale Slice ptrs in the menu for a short time
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U   wip/sliceedit.bas