From 3128f425b8e8ce7eea238708420f362ee7d5fb49 Mon Sep 17 00:00:00 2001
From: Tsuda Kageyu <tsuda.kageyu@gmail.com>
Date: Tue, 17 Nov 2015 11:06:19 +0900
Subject: [PATCH] vsnprintf()/vsprintf() does not necessarily return -1 when
 failed.

---
 taglib/toolkit/tutils.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taglib/toolkit/tutils.h b/taglib/toolkit/tutils.h
index 36e0afd3..0655342a 100644
--- a/taglib/toolkit/tutils.h
+++ b/taglib/toolkit/tutils.h
@@ -213,10 +213,10 @@ namespace TagLib
 
       va_end(args);
 
-      if(length != -1)
+      if(length > 0)
         return String(buf);
       else
-        return String::null;
+        return String();
     }
 
     /*!