misc: bsize: fix division by zero in bsize_mul()
misc: bsize: fix division by zero in bsize_mul()

ambrop72/badvpn-googlecode-export,bakhet/badvpn,fffw/badvpn,Rastii/badvpn,kaliii/badvpn,walterDurin/badvpn,arevindh/badvpn,bawaaaaah/badvpn,bakhet/badvpn,Qnex93/badvpn,fragmede/badvpn,kaliii/badvpn,arevindh/badvpn,ambrop72/badvpn-googlecode-export,fragmede/badvpn,atavism/badvpn,adelshokhy112/badvpn,bawaaaaah/badvpn,nuwaf/badvpn,ambrop72/badvpn-googlecode-export,bakhet/badvpn,fffw/badvpn,adelshokhy112/badvpn,walterDurin/badvpn,arevindh/badvpn,Qnex93/badvpn,atavism/badvpn,adelshokhy112/badvpn,ambrop72/badvpn-googlecode-export,fffw/badvpn,henryhwang/badvpn,Qnex93/badvpn,Rastii/badvpn,nuwaf/badvpn,Rastii/badvpn,atavism/badvpn,bakhet/badvpn,fffw/badvpn,bawaaaaah/badvpn,atavism/badvpn,arevindh/badvpn,fragmede/badvpn,atavism/badvpn,kaliii/badvpn,adelshokhy112/badvpn,nuwaf/badvpn,nuwaf/badvpn,kaliii/badvpn,bawaaaaah/badvpn,walterDurin/badvpn,henryhwang/badvpn,fffw/badvpn,walterDurin/badvpn,henryhwang/badvpn,ambrop72/badvpn-googlecode-export,Qnex93/badvpn,adelshokhy112/badvpn,bakhet/badvpn,walterDurin/badvpn,Rastii/badvpn,Rastii/badvpn,fragmede/badvpn,fragmede/badvpn,bawaaaaah/badvpn,henryhwang/badvpn,henryhwang/badvpn,arevindh/badvpn,Qnex93/badvpn,kaliii/badvpn,nuwaf/badvpn