fix dup wheel events on x11
fix dup wheel events on x11

kwketh/otclient,gpedro/otclient,dreamsxin/otclient,Radseq/otclient,EvilHero90/otclient,Cavitt/otclient_mapgen,gpedro/otclient,dreamsxin/otclient,dreamsxin/otclient,kwketh/otclient,EvilHero90/otclient,Radseq/otclient,Cavitt/otclient_mapgen,gpedro/otclient