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fix closure iter state table init type [backport] (#20717)

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fix closure iter state table init type

It is a well-known fact that using closed intervals for ranges is
logically, objectively and eternally wrong, as evidenced by this
off-by-one.
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Jacek Sieka 2022-10-31 18:41:48 +01:00 • committed by GitHub
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compiler/closureiters.nim
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@ -1155,7 +1155,7 @@ proc newArrayType(g: ModuleGraph; n: int, t: PType; idgen: IdGenerator; owner: P
result = newType(tyArray, nextTypeId(idgen), owner)
let rng = newType(tyRange, nextTypeId(idgen), owner)
rng.n = newTree(nkRange, g.newIntLit(owner.info, 0), g.newIntLit(owner.info, n))
rng.n = newTree(nkRange, g.newIntLit(owner.info, 0), g.newIntLit(owner.info, n - 1))
rng.rawAddSon(t)
result.rawAddSon(rng)