Clarify ChangeLog entry for fix to
@@ -3,7 +3,8 @@ mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
Bugfix
- * Fix to allow test-ref-config.pl to build with Clang. Fixes #1628.
+ * Fix to allow building test suites with any warning that detects unused
+ functions. Fixes #1628.
= mbed TLS 2.16.0 branch released 2018-12-21
