From 48a1a05a887dbc9fb138b401a440ba4452cbecd5 Mon Sep 17 00:00:00 2001
From: Tsuda Kageyu <tsuda.kageyu@gmail.com>
Date: Tue, 23 May 2017 17:39:25 +0900
Subject: Fix MSVC warnings about unreferenced variables.

---
 taglib/toolkit/tstring.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/taglib/toolkit/tstring.cpp b/taglib/toolkit/tstring.cpp
index 283a7f2b..b26e02fa 100644
--- a/taglib/toolkit/tstring.cpp
+++ b/taglib/toolkit/tstring.cpp
@@ -68,7 +68,8 @@ namespace
       data.resize(dstEnd - data.begin());
     }
     catch(const utf8::exception &e) {
-      debug(String("String::copyFromUTF8() - UTF8-CPP error: ") + e.what());
+      const String message(e.what());
+      debug("String::copyFromUTF8() - UTF8-CPP error: " + message);
       data.clear();
     }
   }
@@ -435,7 +436,8 @@ ByteVector String::data(Type t) const
         v.resize(static_cast<unsigned int>(dstEnd - v.begin()));
       }
       catch(const utf8::exception &e) {
-        debug(String("String::data() - UTF8-CPP error: ") + e.what());
+        const String message(e.what());
+        debug("String::data() - UTF8-CPP error: " + message);
         v.clear();
       }
 
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