Fix memory leak.
Fix memory leak.

Fix memory leak by freeing up saved_message.data if it is not NULL.

PR#3489
Reviewed-by: Stephen Henson <9ce5770b3bb4b2a1d59be2d97e34379cd192299f@openssl.org>
Reviewed-by: Tim Hudson <eb0be8e447f673b41b10eda09d63cd72526b0a42@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl