[evolution-ews] Add missed file into POTFILES.in

[Milan Crha <mcrha src gnome org>]

commit 69ac7b620936e415119657e8a4d80581932b7214
Author: Milan Crha <mcrha redhat com>
Date:   Fri May 17 22:21:34 2019 +0200

    Add missed file into POTFILES.in

 po/POTFILES.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 232dee4f..fd153dd1 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -4,6 +4,7 @@
 org.gnome.Evolution-ews.metainfo.xml.in
 src/addressbook/e-book-backend-ews.c
 src/calendar/e-cal-backend-ews.c
+src/calendar/e-cal-backend-ews-utils.c
 src/camel/camel-ews-folder.c
 src/camel/camel-ews-provider.c
 src/camel/camel-ews-store.c