[gimp/gimp-2-10] desktop: update .gitignore

[Michael Natterer <mitch src gnome org>]

commit 5c2bde7f5d32f4904ebb010cab0027d6e52c9389
Author: Michael Natterer <mitch gimp org>
Date:   Mon May 28 12:34:30 2018 +0200

    desktop: update .gitignore
    
    (cherry picked from commit 1b71bd38aec1953e528499795b34b55b51abd84b)

 desktop/.gitignore | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/desktop/.gitignore b/desktop/.gitignore
index d99cb2f9f8..900b8713b3 100644
--- a/desktop/.gitignore
+++ b/desktop/.gitignore
@@ -4,5 +4,6 @@
 /org.gimp.GIMP.appdata.xml
 /gimp.desktop.in
 /gimp.desktop
+/gimp-data-extras.metainfo.xml.in
 /gimp-data-extras.metainfo.xml
 /.thumbnails