Add credit to Changelog for #562
diff --git a/ChangeLog b/ChangeLog
index 08f705e..1e1420a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,7 +5,7 @@
 Bugfix
    * Fix unused variable/function compilation warnings in pem.c and x509_csr.c
      that are reported when building mbed TLS with a config.h that does not
-     define POLARSSL_PEM_PARSE_C. #562
+     define POLARSSL_PEM_PARSE_C. Found by omnium21. #562
 
 = mbed TLS 1.3.18 branch 2016-10-17