#1521: fixed default value of 'Terminal.curAttr' when restoring a not previously saved cursor state
#1521: fixed default value of 'Terminal.curAttr' when restoring a not previously saved cursor state

sourcelair/xterm.js,sourcelair/xterm.js,Tyriar/xterm.js,xtermjs/xterm.js,sourcelair/xterm.js,xtermjs/xterm.js,sourcelair/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,Tyriar/xterm.js,xtermjs/xterm.js,xtermjs/xterm.js,Tyriar/xterm.js,Tyriar/xterm.js