save_png: don't append an additional info block

Bugfix, but I doubt that anyone would ever have noticed.

diff --git a/lib/fastpng.hpp b/lib/fastpng.hpp
index 019b63d..59a12c6 100644 (file)
--- a/lib/fastpng.hpp
+++ b/lib/fastpng.hpp
@@ -111,7 +111,7 @@ PyObject * save_png_fast_progressive(char * filename, int w, int h, bool has_alp
     assert(y == h);
   }
   
-  png_write_end (png_ptr, info_ptr);
+  png_write_end (png_ptr, NULL);
 
   Py_INCREF(Py_None);
   result = Py_None;