diff -r 08b34c3a6f74 -r 08fa3a76a080 contrib/python-zstandard/c-ext/decompressor.c
--- a/contrib/python-zstandard/c-ext/decompressor.c	Tue Jan 17 11:25:02 2017 -0800
+++ b/contrib/python-zstandard/c-ext/decompressor.c	Tue Jan 17 10:17:13 2017 -0800
@@ -165,6 +165,9 @@
 		return NULL;
 	}
 
+	/* Prevent free on uninitialized memory in finally. */
+	output.dst = NULL;
+
 	dstream = DStream_from_ZstdDecompressor(self);
 	if (!dstream) {
 		res = NULL;