en_GB.po:51: end-of-line within string

not quite sure what's supposed to go in there, gentoo's patch looks atm like this:
Index: po/en_GB.po
===================================================================
--- po/en_GB.po (revision 2921)
+++ po/en_GB.po (working copy)
@@ -47,7 +47,7 @@

 #: ../panel-plugin/callbacks.c:228
 msgid "nom"
-msgstr "
+msgstr "nom"

 #: ../panel-plugin/callbacks.c:327
 msgid "Open icon"