[clang] [clang-format] Handle merging functions containing only a block comment (PR #74651)

[Owen Pan via cfe-commits]

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@@ -411,9 +411,16 @@ class LineJoiner {
       }
     }
 
+    const auto *LastNonComment = TheLine->getLastNonComment();
+    assert(LastNonComment);
+    // FIXME: There are probably cases where we should use LastNonComment
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owenca wrote:

No. This is new from this patch.

https://github.com/llvm/llvm-project/pull/74651