fix warning about unused member "q"
fix warning about unused member "q"

olesalscheider/qxmpp,pol51/QXMPP-CMake,ycsoft/qxmpp,ycsoft/qxmpp,ycsoft/qxmpp,gamenet/qxmpp,olesalscheider/qxmpp,Kaffeine/qxmpp,cccco/qxmpp,LightZam/qxmpp,KangLin/qxmpp,gamenet/qxmpp,Ilyatk/qxmpp,Ilyatk/qxmpp,kollix/qxmpp,Ilyatk/qxmpp,kollix/qxmpp,KangLin/qxmpp,LightZam/qxmpp,pol51/QXMPP-CMake,gamenet/qxmpp,cccco/qxmpp,Kaffeine/qxmpp,olesalscheider/qxmpp,KangLin/qxmpp,pol51/QXMPP-CMake,LightZam/qxmpp,cccco/qxmpp,Kaffeine/qxmpp,kollix/qxmpp