fixed query filter for href attribute with leading "/"
fixed query filter for href attribute with leading "/"

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