Fix compile issue in mingw32
Fix compile issue in mingw32

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