[clang] [NFC] [C++20] [Modules] [P1689] [Scanner] Don't use thread pool in P1689 per file mode (PR #84285)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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You can test this locally with the following command:
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``````````bash
git-clang-format --diff da4957be2365831c94eab0b52612367c29f1d299 e875b07ad16c7c66d8d9dd70efca30276981f639 -- clang/tools/clang-scan-deps/ClangScanDeps.cpp
``````````

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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/clang/tools/clang-scan-deps/ClangScanDeps.cpp b/clang/tools/clang-scan-deps/ClangScanDeps.cpp
index 2fd85c8e65..832be0df64 100644
--- a/clang/tools/clang-scan-deps/ClangScanDeps.cpp
+++ b/clang/tools/clang-scan-deps/ClangScanDeps.cpp
@@ -910,8 +910,7 @@ int clang_scan_deps_main(int argc, char **argv, const llvm::ToolContext &) {
 
       // Run the tool on it.
       if (Format == ScanningOutputFormat::Make) {
-        auto MaybeFile =
-            WorkerTool.getDependencyFile(Input->CommandLine, CWD);
+        auto MaybeFile = WorkerTool.getDependencyFile(Input->CommandLine, CWD);
         if (handleMakeDependencyToolResult(Filename, MaybeFile, DependencyOS,
                                            Errs))
           HadErrors = true;
@@ -996,9 +995,8 @@ int clang_scan_deps_main(int argc, char **argv, const llvm::ToolContext &) {
     }
 
     for (unsigned I = 0; I < Pool.getMaxConcurrency(); ++I) {
-      Pool.async([ScanningTask, &WorkerTools, I]() {
-        ScanningTask(WorkerTools[I]);
-      });
+      Pool.async(
+          [ScanningTask, &WorkerTools, I]() { ScanningTask(WorkerTools[I]); });
     }
     Pool.wait();
   }

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https://github.com/llvm/llvm-project/pull/84285