Fix some style issues with TLSv1.3 state machine PR

Reviewed-by: NRich Salz <rsalz@openssl.org>

apps/s_server.c

@@ -553,6 +553,10 @@ static int get_ocsp_resp_from_responder(SSL *s, tlsextstatusctx *srctx,
  err:
     ret = SSL_TLSEXT_ERR_ALERT_FATAL;
  done:
+    /*
+     * If we parsed aia we need to free; otherwise they were copied and we
+     * don't
+     */
     if (aia != NULL) {
         OPENSSL_free(host);
         OPENSSL_free(path);

ssl/statem/statem_clnt.c

@@ -2190,9 +2190,8 @@ MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt)
 /*
  * Perform miscellaneous checks and processing after we have received the
  * server's initial flight. In TLS1.3 this is after the Server Finished message.
- * In <=TLS1.2 this is after the ServerDone message.
- *
- * Returns 1 on success or 0 on failure.
+ * In <=TLS1.2 this is after the ServerDone message. Returns 1 on success or 0
+ * on failure.
  */
 int tls_process_initial_server_flight(SSL *s, int *al)
 {

ssl/tls13_enc.c

@@ -293,6 +293,7 @@ int tls13_change_cipher_state(SSL *s, int which)
     size_t ivlen, keylen, finsecretlen;
     const unsigned char *label;
     size_t labellen;
+    int ret = 0;
 
     if (which & SSL3_CC_READ) {
         if (s->enc_read_ctx != NULL) {
@@ -427,14 +428,11 @@ int tls13_change_cipher_state(SSL *s, int which)
     }
 #endif
 
-    OPENSSL_cleanse(secret, sizeof(secret));
-    OPENSSL_cleanse(key, sizeof(key));
-    OPENSSL_cleanse(iv, sizeof(iv));
-    return 1;
+    ret = 1;
 
  err:
     OPENSSL_cleanse(secret, sizeof(secret));
     OPENSSL_cleanse(key, sizeof(key));
     OPENSSL_cleanse(iv, sizeof(iv));
-    return 0;
+    return ret;
 }

test/clienthellotest.c

@@ -57,10 +57,7 @@ int main(int argc, char *argv[])
         testresult = 0;
         ctx = SSL_CTX_new(TLS_method());
 
-        /*
-         * This test is testing session tickets for <= TLS1.2. It isn't relevant
-         * for TLS1.3
-         */
+        /* Testing for session tickets <= TLS1.2; not relevant for 1.3 */
         if (ctx == NULL || !SSL_CTX_set_max_proto_version(ctx, TLS1_2_VERSION))
             goto end;