Fix bug in DHE-PSK PMS computation

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index f22a146..7dff0cf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -51,6 +51,9 @@
      interpret semicolons as comment delimiters (found by Barry K. Nathan).
    * Fix off-by-one error in parsing Supported Point Format extension that
      caused some handshakes to fail.
+   * Fix possible miscomputation of the premaster secret with DHE-PSK key
+     exchange that caused some handshakes to fail with other implementations.
+     (Failure rate <= 1/255 with common DHM moduli.)
 
 = PolarSSL 1.3.7 released on 2014-05-02
 Features