--- a/contrib/python-zstandard/zstd/decompress/huf_decompress.c	Fri Dec 27 18:54:57 2019 -0500
+++ b/contrib/python-zstandard/zstd/decompress/huf_decompress.c	Sat Dec 28 09:55:45 2019 -0800
@@ -61,7 +61,9 @@
 *  Error Management
 ****************************************************************/
 #define HUF_isError ERR_isError
+#ifndef CHECK_F
 #define CHECK_F(f) { size_t const err_ = (f); if (HUF_isError(err_)) return err_; }
+#endif
 
 
 /* **************************************************************