[clang] [LifetimeSafety] Detect use-after-return (PR #165370)

[Utkarsh Saxena via cfe-commits]

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@@ -58,12 +58,11 @@ static llvm::BitVector computePersistentOrigins(const FactManager &FactMgr,
         CheckOrigin(OF->getSrcOriginID());
         break;
       }
-      case Fact::Kind::ReturnOfOrigin:
-        CheckOrigin(F->getAs<ReturnOfOriginFact>()->getReturnedOriginID());
-        break;
       case Fact::Kind::Use:
         CheckOrigin(F->getAs<UseFact>()->getUsedOrigin());
         break;
+      case Fact::Kind::OriginEscapes:
+        break;
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usx95 wrote:

no need to add a break here. Just fallthrough to the `break` should be enough

https://github.com/llvm/llvm-project/pull/165370