Fix memleak with repeated [gc]cm_setkey()
diff --git a/ChangeLog b/ChangeLog
index d44463f..160c0fb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -35,6 +35,8 @@
      errors on use of deprecated functions.
 
 Bugfix
+   * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
+     once on the same context.
    * Fix bug in ssl_mail_client when password is longer that username (found
      by Bruno Pape).
    * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules