[calls] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit a7bca032feaf7afd8978325e958235576ebac1ce
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Thu May 26 12:46:53 2022 +0200

    Update POTFILES.in

 po/POTFILES.in | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index d24bf784..5998e4be 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -21,4 +21,6 @@ src/ui/new-call-header-bar.ui
 plugins/mm/calls-mm-call.c
 plugins/mm/calls-mm-provider.c
 plugins/ofono/calls-ofono-provider.c
+plugins/sip/calls-sip-account-widget.c
+plugins/sip/calls-sip-call.c
 plugins/sip/sip-account-widget.ui