[gimp] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit 8868dc957daf45a8f5fb49b5a7e65b7bc3514c8e
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Dec 8 17:30:44 2018 +0100

    Update POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 614402f00e..2886921972 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -175,6 +175,7 @@ app/core/gimpitem-linked.c
 app/core/gimplayer-floating-selection.c
 app/core/gimplayer.c
 app/core/gimplayermask.c
+app/core/gimplineart.c
 app/core/gimpmybrush-load.c
 app/core/gimppalette.c
 app/core/gimppalette-import.c