[llvm] [NFC][LLVM] Use ListSeparator in AsmWriter (PR #161422)

[Nikita Popov via llvm-commits]

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@@ -1848,13 +1831,13 @@ static void WriteConstantInternal(raw_ostream &Out, const Constant *CV,
       Out << ", ";
     }
 
+    ListSeparator LS;
     for (User::const_op_iterator OI = CE->op_begin(); OI != CE->op_end();
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nikic wrote:

Use range based loop here as well?

https://github.com/llvm/llvm-project/pull/161422