[clang] Refactor traverse function with clearer function names (PR #71441)

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


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``````````bash
git-clang-format --diff 74e0a26fd114cac39e251e4c2b6fbbadd6009887 1fc6f26966f0192bb1789b66778381d94cd6bbe5 -- clang/lib/ASTMatchers/ASTMatchFinder.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/ASTMatchers/ASTMatchFinder.cpp b/clang/lib/ASTMatchers/ASTMatchFinder.cpp
index 56bddce7d..612bc3b5e 100644
--- a/clang/lib/ASTMatchers/ASTMatchFinder.cpp
+++ b/clang/lib/ASTMatchers/ASTMatchFinder.cpp
@@ -395,15 +395,13 @@ private:
 
   // Traverses the subtree rooted at 'Node'; returns true if the
   // traversal should continue after this function returns.
-template <typename NodeType>
-bool traverse(const NodeType &node) {
+  template <typename NodeType> bool traverse(const NodeType &node) {
     static_assert(IsBaseType<NodeType>::value,
-        "traverse can only be instantiated with base type");
+                  "traverse can only be instantiated with base type");
     if (!shouldContinue(node))
-        return false;
+      return false;
     return continueTraversal(node);
-}
-
+  }
 
   const DynTypedMatcher *const Matcher;
   ASTMatchFinder *const Finder;

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https://github.com/llvm/llvm-project/pull/71441