Fix resource leak when using mutex and ssl_cookie
When using ssl_cookie with MBEDTLS_THREADING_C, fix a resource leak caused by
initiating a mutex in mbedtls_ssl_cookie_free instead of freeing it.
Raised and fix suggested by lan Gillingham in the mbed TLS forum
Tracked in #771
diff --git a/ChangeLog b/ChangeLog
index 7399cad..e22fdee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -54,6 +54,8 @@
* Fixed the templates used to generate project and solution files for Visual
Studio 2015 as well as the files themselves, to remove a build warning
generated in Visual Studio 2015. Reported by Steve Valliere. #742
+ * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
+ Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
= mbed TLS 2.4.1 branch released 2016-12-13