[gimp] po: add gimptooltransformgrid.c to POTFILES.in

[Michael Natterer <mitch src gnome org>]

commit dc17194fcaadb350d8f7c0b904d78be8b9c455ff
Author: Michael Natterer <mitch gimp org>
Date:   Sat Jun 17 03:02:49 2017 +0200

    po: add gimptooltransformgrid.c to POTFILES.in

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 27aa781..6e6327d 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -254,6 +254,7 @@ app/display/gimpdisplayshell-title.c
 app/display/gimpnavigationeditor.c
 app/display/gimpstatusbar.c
 app/display/gimptoolcompass.c
+app/display/gimptooltransformgrid.c
 
 app/file/file-open.c
 app/file/file-remote.c