Fix ChangeLog after merging fix for IOTSSL-628
diff --git a/ChangeLog b/ChangeLog
index 7d7889d..6ed89ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,8 +5,6 @@
 Security
    * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt 
      required by PKCS1 v2.2
-
-Security
    * Fix a potential integer underflow to buffer overread in 
      mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
      SSL/TLS.