[clang] [clang] ast-dump: print all pointers with color (PR #174954)

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


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You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/AST/TextNodeDumper.cpp --diff_from_common_commit
``````````

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The reproduction instructions above might return results for more than one PR
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
index f7107ef14..40a0bb17e 100644
--- a/clang/lib/AST/TextNodeDumper.cpp
+++ b/clang/lib/AST/TextNodeDumper.cpp
@@ -55,7 +55,8 @@ static void dumpPreviousDeclImpl(TextNodeDumper &TND, raw_ostream &OS,
 
 /// Dump the previous declaration in the redeclaration chain for a declaration,
 /// if any.
-static void dumpPreviousDecl(TextNodeDumper &TND, raw_ostream &OS, const Decl *D) {
+static void dumpPreviousDecl(TextNodeDumper &TND, raw_ostream &OS,
+                             const Decl *D) {
   switch (D->getKind()) {
 #define DECL(DERIVED, BASE)                                                    \
   case Decl::DERIVED:                                                          \

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https://github.com/llvm/llvm-project/pull/174954