Rename ssl_decrypt_buf() to mbedtls_ssl_decrypt_buf() in comment

library/ssl_tls.c

diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index dc6647d..f0347ac 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1733,7 +1733,7 @@
 #endif /* MBEDTLS_SSL_PROTO_SSL3 */
 
 /* The function below is only used in the Lucky 13 counter-measure in
- * ssl_decrypt_buf(). These are the defines that guard the call site. */
+ * mbedtls_ssl_decrypt_buf(). These are the defines that guard the call site. */
 #if defined(MBEDTLS_SSL_SOME_MODES_USE_MAC) && \
     ( defined(MBEDTLS_SSL_PROTO_TLS1) || \
       defined(MBEDTLS_SSL_PROTO_TLS1_1) || \