[clang] [clang-format] allow short function body on a single line (PR #151428)

[Lidong Yan via cfe-commits]

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@@ -532,6 +538,20 @@ class LineJoiner {
       }
       return MergedLines;
     }
+
+    // Previously, UnwrappedLineParser would move the left brace to a new line
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brandb97 wrote:

Thank you for kindly explaining how to write proper comment, I will change it in next version.

https://github.com/llvm/llvm-project/pull/151428