[llvm] Fix uninitialized variable in DSE (PR #142768)

[via llvm-commits]

https://github.com/clubby789 created https://github.com/llvm/llvm-project/pull/142768

Introduced by accident in #138299 (https://lab.llvm.org/buildbot/#/builders/164/builds/10604)

cc @nikic 

>From 9bcad5175224d490fd898fd93218d40014427bca Mon Sep 17 00:00:00 2001
From: clubby789 <jamie at hill-daniel.co.uk>
Date: Wed, 4 Jun 2025 12:45:06 +0100
Subject: [PATCH] Fix uninitialized variable in DSE

---
 llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 59a08e58b226a..49a0c88922c3e 100644
--- a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -2029,7 +2029,7 @@ struct DSEState {
     auto *InnerCallee = Malloc->getCalledFunction();
     if (!InnerCallee)
       return false;
-    LibFunc Func;
+    LibFunc Func = NotLibFunc;
     StringRef ZeroedVariantName;
     if (!TLI.getLibFunc(*InnerCallee, Func) || !TLI.has(Func) ||
         Func != LibFunc_malloc) {