gnu: emacs-pdf-tools: Update to 0.91.

* gnu/packages/emacs-xyz.scm (emacs-pdf-tools): Update to 0.91.

gnu/packages/emacs-xyz.scm

@@ -3324,22 +3324,18 @@ during idle time, while Emacs is doing nothing else.")
     (license license:gpl3+)))
 
 (define-public emacs-pdf-tools
-  ;; XXX: Development branch fixes an incompatibility with Emacs 27+.  See
-  ;; <https://github.com/politza/pdf-tools/issues/616>.
-  (let ((commit "5f77dae43eb8f71e52e10ba8cf994883f74c3fb7")
-        (revision "2"))
   (package
     (name "emacs-pdf-tools")
-      (version (git-version "0.90" revision commit))
+    (version "0.91")
     (source
      (origin
        (method git-fetch)
        (uri (git-reference
              (url "https://github.com/vedang/pdf-tools")
-               (commit commit)))
+             (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-          (base32 "0hzqcnxi66d0c3dq7y3dn28f3yri4zcx46yylhy0xnm3f1yja0rm"))))
+        (base32 "07ixspgn4s1jg66w7m2f3sh43giakz9srhp7rpw389z32g57i1rx"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f                      ; there are no tests
@@ -3358,7 +3354,6 @@ during idle time, while Emacs is doing nothing else.")
          (add-after 'enter-server-dir 'autogen
            (lambda _
              (invoke "bash" "autogen.sh")))
-
          ;; Build emacs side using 'emacs-build-system'.
          (add-after 'compress-documentation 'enter-lisp-dir
            (lambda _ (chdir "../lisp")))
@@ -3396,7 +3391,7 @@ during idle time, while Emacs is doing nothing else.")
 files.  The key difference is that pages are not pre-rendered by
 e.g. ghostscript and stored in the file-system, but rather created on-demand
 and stored in memory.")
-      (license license:gpl3+))))
+    (license license:gpl3+)))
 
 (define-public emacs-saveplace-pdf-view
   (package