From aeddf63587c242a7995598f4b1a5f248e4e3cb13 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 11 Apr 2019 10:41:03 -0400
Subject: cmArgumentParser: Fix -Wcomma warning

Clang `-Wcomma` warns:

```
Source/cmArgumentParser.cxx:58:42: warning: possible misuse of comma operator
  this->CurrentList = (val.emplace_back(), &val.back());
                                         ^
```

This was introduced by commit 4359fe133b (Introduce cmArgumentParser,
2019-03-23).  Suppress it with the suggested cast.
---
 Source/cmArgumentParser.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/cmArgumentParser.cxx b/Source/cmArgumentParser.cxx
index 9a9932c..751d117 100644
--- a/Source/cmArgumentParser.cxx
+++ b/Source/cmArgumentParser.cxx
@@ -55,7 +55,7 @@ void Instance::Bind(StringList& val)
 void Instance::Bind(MultiStringList& val)
 {
   this->CurrentString = nullptr;
-  this->CurrentList = (val.emplace_back(), &val.back());
+  this->CurrentList = (static_cast<void>(val.emplace_back()), &val.back());
   this->ExpectValue = false;
 }
 
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