Clarify fix for #673 in Changelog
Clarified fix, and added credit.
diff --git a/ChangeLog b/ChangeLog
index a404c56..4b7536c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,8 +3,9 @@
= mbed TLS x.x.x branch released xxxx-xx-xx
Bugfix
- * Fix redefinition of macro ssl_set_bio to undefined symbol
- mbedtls_ssl_set_bio_timeout in compat-1.3.h. #673
+ * Fix the redefinition of macro ssl_set_bio to an undefined symbol
+ mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
+ Found by omlib-lin. #673
= mbed TLS 2.4.1 branch released 2016-12-13