[clang] [clang] Implement lifetime analysis for lifetime_capture_by(X) (PR #115921)

[Boaz Brickner via cfe-commits]

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@@ -3925,13 +3925,20 @@ def LifetimeCaptureByDocs : Documentation {
 parameter or implicit object parameter indicates that that objects that are referred to
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bricknerb wrote:

While you're here, remove one of the "that" ?

https://github.com/llvm/llvm-project/pull/115921