fixed Wrong prototype in client.c - ID: 3538627 (patch by John Sucaet)
fixed Wrong prototype in client.c - ID: 3538627 (patch by John Sucaet)

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