[clang] [clang-format][NFC] Simplify AlignMacroMatches (PR #164122)

[Björn Schäpers via cfe-commits]

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@@ -656,7 +656,6 @@ void WhitespaceManager::alignConsecutiveMacros() {
 
   auto AlignMacrosMatches = [](const Change &C) {
     const FormatToken *Current = C.Tok;
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HazardyKnusperkeks wrote:

```suggestion
    const FormatToken *Current = C.Tok;
    assert(Current);
```

https://github.com/llvm/llvm-project/pull/164122