optimizer: remove double xc_undo_pass_two/xc_redo_pass_two, avoid optimize more than once on same op_array
optimizer: remove double xc_undo_pass_two/xc_redo_pass_two, avoid optimize more than once on same op_array


git-svn-id: 88e1a00e4eab3b0bb0c09889526309a3e2f5bd8a@335 c26eb9a1-5813-0410-bd6c-c2e55f420ca7

zend60/5400,zend60/5400,zend60/5400,zend60/5400,zend60/5400