send: refuse to send while receiving another response
send: refuse to send while receiving another response

OpenInkpot-archive/iplinux-libmpdclient,jwise/libmpdclient,yusiwen/libmpdclient,cmende/libmpdclient,jagleeso/libmpdclient,jwise/libmpdclient,cmende/libmpdclient,yusiwen/libmpdclient,OpenInkpot-archive/iplinux-libmpdclient,cmende/libmpdclient,psych0tik/libmpdclient2,sl0th/libmpdclient,sl0th/libmpdclient,sl0th/libmpdclient,jwise/libmpdclient,yusiwen/libmpdclient,jagleeso/libmpdclient,psych0tik/libmpdclient2,jagleeso/libmpdclient