socket: moved code to disable_blocking()
socket: moved code to disable_blocking()

This lets us eliminate do_connect_fail(), which would now be a trivial
function.

psych0tik/libmpdclient2,psych0tik/libmpdclient2,jwise/libmpdclient,cmende/libmpdclient,sl0th/libmpdclient,sl0th/libmpdclient,sl0th/libmpdclient,jagleeso/libmpdclient,jagleeso/libmpdclient,cmende/libmpdclient,yusiwen/libmpdclient,yusiwen/libmpdclient,jagleeso/libmpdclient,jwise/libmpdclient,cmende/libmpdclient,yusiwen/libmpdclient,jwise/libmpdclient