REF: Fix introduce variable when first expression is inside nested block

[dima74]

Fix that when extracting 7 to variable from this code:

let x1 = if true { 7 } else { 0 };
let x2 = 7;

it was transformed to

let x1 = if true {
    let i = 7;
    i
} else { 0 };
let x2 = i;

while correct result would be

let i = 7;
let x1 = if true { i } else { 0 };
let x2 = i;

[Undin]

Looks like the following version does the same but faster

val parent = PsiTreeUtil.findCommonParent(anchor.parent, *exprs.toTypedArray())
while (anchor.parent != parent) {
    anchor = anchor.parent
}

Also, maybe it's worth to extract while loop into separate function because we have the same code in findAnchor above

[dima74]

Yes, thank you, updated

[mchernyavsky]

bors r+

[mchernyavsky]

bors r-

[mchernyavsky]

bors r+

[Undin]

@mchernyavsky Looks like it's bors bug. The same was with #5057
@dima74 Could you rebase onto master, please? Last time it helped

[dima74]

@Undin yes, rebased

[mchernyavsky]

bors r+

[bors]

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