[clang] [clang-format] Treat empty for/while loops as short loops (PR #70768)

[Owen Pan via cfe-commits]

================
@@ -3117,9 +3117,16 @@ void UnwrappedLineParser::parseForOrWhileLoop(bool 
HasParens) {
       FormatTok->setFinalizedType(TT_ConditionLParen);
     parseParens();
   }
-  // Event control.
-  if (Style.isVerilog())
+
+  if (Style.isVerilog()) {
+    // Event control.
     parseVerilogSensitivityList();
+  } else if (Style.AllowShortLoopsOnASingleLine && FormatTok->is(tok::semi) &&
----------------
owenca wrote:

Does it matter in the real world? Do we really need to decide whether the 
following is “short”?
```
/**/ while /**/ ( /**/ true /**/ ) /**/ ; //
```

https://github.com/llvm/llvm-project/pull/70768
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