[clang] Fix the warning in RefCntblBaseVirtualDtorChecker.cpp:61 (PR #93403)

[Ryosuke Niwa via cfe-commits]

https://github.com/rniwa created https://github.com/llvm/llvm-project/pull/93403

None

>From 4f5b6ac39e709bddf7f1ced314ebb1984a1942de Mon Sep 17 00:00:00 2001
From: Ryosuke Niwa <rniwa at apple.com>
Date: Sun, 26 May 2024 00:34:15 -0700
Subject: [PATCH] Fix the warning in RefCntblBaseVirtualDtorChecker.cpp:61

---
 .../Checkers/WebKit/RefCntblBaseVirtualDtorChecker.cpp          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/StaticAnalyzer/Checkers/WebKit/RefCntblBaseVirtualDtorChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/WebKit/RefCntblBaseVirtualDtorChecker.cpp
index 26879f2f87c8b..9df108e28ecdb 100644
--- a/clang/lib/StaticAnalyzer/Checkers/WebKit/RefCntblBaseVirtualDtorChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/WebKit/RefCntblBaseVirtualDtorChecker.cpp
@@ -58,7 +58,7 @@ class DerefFuncDeleteExprVisitor
   std::optional<bool> HasSpecializedDelete(CXXMethodDecl *Decl) {
     if (auto *Body = Decl->getBody())
       return VisitBody(Body);
-    if (auto *Tmpl = Decl->getTemplateInstantiationPattern())
+    if (Decl->getTemplateInstantiationPattern())
       return std::nullopt; // Indeterminate. There was no concrete instance.
     return false;
   }