slight rewording requested by reviewer
@@ -120,7 +120,7 @@ int mbedtls_net_bind( mbedtls_net_context *ctx, const char *bind_ip, const char
* \param client_ip Will contain the client IP address, can be NULL
* \param buf_size Size of the client_ip buffer
* \param ip_len Will receive the size of the client IP written,
- * can be NULL if client_ip == NULL
+ * can be NULL if client_ip is null
*
* \return 0 if successful, or
* MBEDTLS_ERR_NET_ACCEPT_FAILED, or
