gnrc_netapi: report errors on dispatch
gnrc_netapi: report errors on dispatch

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