$OpenBSD: patch-libffmpegthumbnailer_pngwriter_cpp,v 1.1 2011/07/08 20:38:01 naddy Exp $

Fix build with png-1.5.

--- libffmpegthumbnailer/pngwriter.cpp.orig	Tue Jul  5 17:36:44 2011
+++ libffmpegthumbnailer/pngwriter.cpp	Tue Jul  5 17:37:03 2011
@@ -49,7 +49,7 @@ PngWriter::PngWriter(std::vector<uint8_t>& outputBuffe
 , m_InfoPtr(NULL)
 {
     init();
-    png_set_write_fn(m_PngPtr, (voidp) &outputBuffer, writeDataCallback, NULL);
+    png_set_write_fn(m_PngPtr, &outputBuffer, writeDataCallback, NULL);
 }
 
 PngWriter::~PngWriter()
