Fix a memory leak reported by Martin Buchholz.

THANKS

diff --git a/THANKS b/THANKS
index 10f3e84..ae6a2f1 100644
--- a/THANKS
+++ b/THANKS
@@ -23,6 +23,7 @@
 Jono Spiro <jono.spiro@gmail.com>
 Kohei Yoshida <kohei.yoshida@gmail.com>
 Lubomir I. Ivanov <neolit123@gmail.com>
+Martin Buchholz <martinrb@google.com>
 Martin Szulecki <m.szulecki@libimobiledevice.org>
 Michal Vyskocil <mvyskocil@suse.cz>
 Mikhail Gusarov <dottedmag@dottedmag.net>.