[clang] [Clang] Fix stack-use-after-return in TryArrayCopy by allocating OpaqueValueExpr on the ASTContext (PR #192080)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/test/SemaCXX/gh192026.cpp clang/lib/Sema/SemaInit.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
index 3c95d1cf6..991e7d42b 100644
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -4380,9 +4380,9 @@ static void TryArrayCopy(Sema &S, const InitializationKind &Kind,
       InitializedEntity::InitializeElement(S.Context, 0, Entity);
   QualType InitEltT =
       S.Context.getAsArrayType(Initializer->getType())->getElementType();
-  OpaqueValueExpr *OVE = new (S.Context) OpaqueValueExpr(Initializer->getExprLoc(), InitEltT,
-                      Initializer->getValueKind(),
-                      Initializer->getObjectKind());
+  OpaqueValueExpr *OVE = new (S.Context) OpaqueValueExpr(
+      Initializer->getExprLoc(), InitEltT, Initializer->getValueKind(),
+      Initializer->getObjectKind());
   Expr *OVEAsExpr = OVE;
   Sequence.InitializeFrom(S, Element, Kind, OVEAsExpr,
                           /*TopLevelOfInitList*/ false,

``````````

</details>


https://github.com/llvm/llvm-project/pull/192080