ps-ccrypt can't save file with emacs 26.1

[Zhang Jun <gb2313@gmail.com>]

I upgraded to 26.1, found ps-ccrypt stop working.

it can decrypt file, but can't save change.

got such error:

Debugger entered--Lisp error: (wrong-number-of-arguments
#f(compiled-function (start end file &optional append visit) #<bytecode
0x18bddf3>) 7)
  ps-ccrypt-write-region(nil nil "d:/document/my.org.cpt" nil t
"d:/document/my.org.cpt" nil)
  apply(ps-ccrypt-write-region (nil nil "d:/document/my.org.cpt" nil t
"d:/document/my.org.cpt" nil))
  ps-ccrypt-handler(write-region nil nil "d:/document/my.org.cpt" nil t
"d:/document/my.org.cpt" nil)
  write-region(nil nil "d:/document/my.org.cpt" nil t
"d:/document/my.org.cpt")
  basic-save-buffer-2()
  basic-save-buffer-1()
  basic-save-buffer(t)
  save-buffer(1)
  funcall-interactively(save-buffer 1)
  call-interactively(save-buffer nil nil)
  command-execute(save-buffer)

http://ccrypt.sourceforge.net/ps-ccrypt.el