Function patch_seq_close_channel 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn patch_seq_close_channel(
    stack: Stack,
) -> Stack

Close a channel (drop it from the stack)

Stack effect: ( Channel – )

Simply drops the channel. When all references are dropped, the channel is closed. This is provided for API compatibility but is equivalent to drop.

Safety

Stack must have a Channel on top