[clang] [NFC][clang] Prefer triple overload of lookupTarget (PR #162185)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/Testing/CommandLineArgs.cpp clang/unittests/Driver/ToolChainTest.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Testing/CommandLineArgs.cpp b/clang/lib/Testing/CommandLineArgs.cpp
index ae4ccb4e1..95f37e3b6 100644
--- a/clang/lib/Testing/CommandLineArgs.cpp
+++ b/clang/lib/Testing/CommandLineArgs.cpp
@@ -103,7 +103,8 @@ std::string getAnyTargetForTesting() {
     StringRef TargetName(Target.getName());
     if (TargetName == "x86-64")
       TargetName = "x86_64";
-    if (llvm::TargetRegistry::lookupTarget(llvm::Triple(TargetName), Error) == &Target) {
+    if (llvm::TargetRegistry::lookupTarget(llvm::Triple(TargetName), Error) ==
+        &Target) {
       return std::string(TargetName);
     }
   }

``````````

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https://github.com/llvm/llvm-project/pull/162185