SSH2: don't remove old $this->bitmap values
SSH2: don't remove old $this->bitmap values

paragonie-scott/phpseclib,thaigialai1987/phpseclib,kenichiii/phpseclib,terrafrost/phpseclib,paragonie-scott/phpseclib,creatuity/phpseclib,thaigialai1987/phpseclib,splitice/phpseclib,danog/phpseclib,melya/phpseclib,danog/phpseclib,splitice/phpseclib,metaclassing/phpseclib,metaclassing/phpseclib,kenichiii/phpseclib,creatuity/phpseclib,phpseclib/phpseclib,melya/phpseclib