Merge remote-tracking branch 'tor-gitlab/mr/216'

changes/ticket40142

+  o Minor bugfixes (logging, flow control):
+    - Turn a SENDME failure log warning into a debug. It can actually happen
+      naturally. Fixes bug 40142; bugfix on 0.4.1.1-alpha.

src/core/or/sendme.c

@@ -398,8 +398,8 @@ sendme_connection_edge_consider_sending(edge_connection_t *conn)
     conn->deliver_window += STREAMWINDOW_INCREMENT;
     if (connection_edge_send_command(conn, RELAY_COMMAND_SENDME,
                                      NULL, 0) < 0) {
-      log_warn(LD_BUG, "connection_edge_send_command failed while sending "
-                       "a SENDME. Circuit probably closed, skipping.");
+      log_debug(LD_CIRC, "connection_edge_send_command failed while sending "
+                         "a SENDME. Circuit probably closed, skipping.");
       goto end; /* The circuit's closed, don't continue */
     }
   }