fixed off-by-one bug in show_data
fixed off-by-one bug in show_data

nmacs/libcoap,thecodemaiden/libcoap-fork,fredericgermain/libcoap,gebart/libcoap,markushx/libcoap,authmillenon/libcoap,RIOT-OS/libcoap,joaopedrotaveira/libcoap,sgso/libcoap,fredericgermain/libcoap,OlegHahm/libcoap,pabigot/libcoap,authmillenon/libcoap,sgso/libcoap,markushx/libcoap,joaopedrotaveira/libcoap,gebart/libcoap,pabigot/libcoap,nmacs/libcoap,fredericgermain/libcoap,PolymorhicCode/libcoap,alexaring/libcoap,alexaring/libcoap,markushx/libcoap,OlegHahm/libcoap,alexaring/libcoap,sgso/libcoap,pabigot/libcoap,RIOT-OS/libcoap,joaopedrotaveira/libcoap,gebart/libcoap,thecodemaiden/libcoap-fork,authmillenon/libcoap,OlegHahm/libcoap,nmacs/libcoap