[clang] [clang-tools-extra] [clang-tidy] Avoid matching nodes in system headers (PR #151035)

[Julian Schmidt via cfe-commits]

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@@ -135,10 +135,15 @@ class MatchFinder {
       llvm::StringMap<llvm::TimeRecord> &Records;
     };
 
+    MatchFinderOptions() {}
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5chmidti wrote:

`MatchFinderOptions() = default;` (why add it in the first place? Having no ctor should be enough)

https://github.com/llvm/llvm-project/pull/151035