Backport 1.3:Fix crash when calling `mbedtls_ssl_cache_free` twice
Set `cache` to zero at the end of `mbedtls_ssl_cache_free` #1104
diff --git a/ChangeLog b/ChangeLog
index 6a1be98..c8677e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,6 +14,8 @@
* Fix leap year calculation in x509_date_is_valid() to ensure that invalid
dates on leap years with 100 and 400 intervals are handled correctly. Found
by Nicholas Wilson. #694
+ * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
+ MilenkoMitrovic, #1104
= mbed TLS 1.3.21 branch released 2017-08-10