sock_async_event: fix typo in tcp_queue function
sock_async_event: fix typo in tcp_queue function

This was never checked at compile time before so a naming error sneaked
in.

OTAkeys/RIOT,RIOT-OS/RIOT,smlng/RIOT,smlng/RIOT,smlng/RIOT,kYc0o/RIOT,jasonatran/RIOT,basilfx/RIOT,OlegHahm/RIOT,yogo1212/RIOT,basilfx/RIOT,kaspar030/RIOT,OTAkeys/RIOT,authmillenon/RIOT,authmillenon/RIOT,jasonatran/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,miri64/RIOT,kaspar030/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,yogo1212/RIOT,ant9000/RIOT,authmillenon/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,miri64/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,ant9000/RIOT,jasonatran/RIOT,basilfx/RIOT,basilfx/RIOT,kaspar030/RIOT,OlegHahm/RIOT,kYc0o/RIOT,authmillenon/RIOT,kaspar030/RIOT,kYc0o/RIOT,kaspar030/RIOT,miri64/RIOT,ant9000/RIOT,ant9000/RIOT,smlng/RIOT,ant9000/RIOT,miri64/RIOT,jasonatran/RIOT,OlegHahm/RIOT,yogo1212/RIOT,authmillenon/RIOT,OTAkeys/RIOT,miri64/RIOT,yogo1212/RIOT,smlng/RIOT,jasonatran/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,basilfx/RIOT,OlegHahm/RIOT