gnu: irssi: Use 'modify-phases'.

* gnu/packages/irc.scm (irssi)[arguments]: Use 'modify-phases'.

gnu/packages/irc.scm

@@ -88,8 +88,8 @@ irssi, but graphical.")
     (build-system gnu-build-system)
     (arguments
      `(#:phases
-       (alist-replace
-        'configure
+       (modify-phases %standard-phases
+         (replace 'configure
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let ((out (assoc-ref outputs "out"))
                    (ncurses (assoc-ref inputs "ncurses")))
@@ -97,8 +97,7 @@ irssi, but graphical.")
                (zero?
                 (system* "./configure"
                          (string-append "--prefix=" out)
-                      (string-append "--with-ncurses=" ncurses)))))
-        %standard-phases)))
+                         (string-append "--with-ncurses=" ncurses)))))))))
     (inputs
      `(("glib" ,glib)
        ("ncurses" ,ncurses)