[clang] [LifetimeSafety] Add missing origins stats for lifetime analysis (PR #166568)

[Utkarsh Saxena via cfe-commits]

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@@ -82,6 +89,15 @@ class LifetimeSafetyAnalysis {
   std::unique_ptr<LoanPropagationAnalysis> LoanPropagation;
 };
 } // namespace internal
+
+// utility function to print missing origin stats.
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usx95 wrote:

Triple `///` to match the file style.
Also, lets not specifically mention missing origin stats here.
`/// Utility function to print lifetime safety statistics.`

https://github.com/llvm/llvm-project/pull/166568