gnu: notmuch-addrlookup-c: Update to 9.

* gnu/packages/mail.scm (notmuch-addrlookup-c): Update to 9.
[arguments]: Remove PREFIX from #:make-flags.

gnu/packages/mail.scm

@@ -919,30 +919,22 @@ ing, and tagging large collections of email messages.")
     (license gpl3+)))
 
 (define-public notmuch-addrlookup-c
-  ;; This commit includes a compatibility fix for notmuch-0.25, and is not
-  ;; currently part of any release.  Please update this package when
-  ;; notmuch-addrlookup-c-9 is released.
-  (let ((commit "88f156d04990a71c6ad6fc2757b537b44e3c4d00")
-        (revision "1"))          ;Guix package revision
   (package
     (name "notmuch-addrlookup-c")
-      (version (string-append "8-" revision "."
-                              (string-take commit 7)))
+    (version (string-append "9"))
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://github.com/aperezdc/notmuch-addrlookup-c.git")
-                      (commit commit)))
+                    (commit (string-append "v" version))))
               (file-name (string-append name "-" version "-checkout"))
               (sha256
                (base32
-                  "0v0wzs7qzy4n1hbql8s10qrwgalcxdzbxf8pj6cii1pv2jwmkxbm"))))
+                "1j3zdx161i1x4w0nic14ix5i8hd501rb31daf8api0k8855sx4rc"))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f ; no tests
-         #:make-flags (list "CC=gcc"
-                            (string-append "PREFIX="
-                                           (assoc-ref %outputs "out")))
+       #:make-flags (list "CC=gcc")
        #:phases (modify-phases %standard-phases
                   (delete 'configure)
                   ;; Remove vim code completion config, it's not needed to
@@ -963,7 +955,7 @@ ing, and tagging large collections of email messages.")
     (synopsis "Address lookup tool for Notmuch")
     (description "This is an address lookup tool using a Notmuch database,
 useful for email address completion.")
-      (license license:expat))))
+    (license license:expat)))
 
 (define-public python-notmuch
   (package