[geary] Update POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit 6441c103fce87bf7d3b4ca7db05b96125a62d976
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Thu Jan 23 17:41:34 2020 +0100

    Update POTFILES.skip

 po/POTFILES.skip | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 12759016..ab4c9a19 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,4 +1,5 @@
 # List of source files that should *not* be translated.
 # Please keep this file sorted alphabetically.
 build
+src/client/components/components-reflow-box.c
 subprojects/libhandy