From 3d555982fd944daf1ab7163b5ff68217b5a4c3ad Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Fri, 18 Mar 2016 09:51:57 +0100
Subject: [PATCH] file_io - make operator bool() explicit via @lightmare
 (https://github.com/mapnik/mapnik/commit/0d032c261863b4c1c92f5630a91b0a15dba059c3#commitcomment-16753722)

---
 include/mapnik/util/file_io.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/mapnik/util/file_io.hpp b/include/mapnik/util/file_io.hpp
index 17315e892..210828aea 100644
--- a/include/mapnik/util/file_io.hpp
+++ b/include/mapnik/util/file_io.hpp
@@ -63,7 +63,7 @@ public:
         return file_ ? true : false;
     }
 
-    inline operator bool() const
+    explicit operator bool() const
     {
         return this->open();
     }