libssh2_channel_ignore_extended_data(3) on Linux
The text c00c30e1aa01, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
convenience macro for libssh2_channel_handle_extended_data(3) calls