From 981a53492010a50fd9b2a334b4c130ca3799b7ae Mon Sep 17 00:00:00 2001
From: heckflosse <heckflosse67@gmx.de>
Date: Tue, 29 Nov 2016 13:11:42 +0100
Subject: [PATCH] Fixes #3517, build fails when using libcairo 1.15

---
 rtgui/guiutils.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtgui/guiutils.h b/rtgui/guiutils.h
index 38f5297eb..b8e058eb4 100644
--- a/rtgui/guiutils.h
+++ b/rtgui/guiutils.h
@@ -437,7 +437,7 @@ public:
     // you have to check if the surface is created thanks to surfaceCreated before starting to draw on it
     bool surfaceCreated()
     {
-        return surface;
+        return static_cast<bool>(surface);
     }
     Cairo::RefPtr<Cairo::ImageSurface> getSurface()
     {