Fix extraction of two messages in kcmkwinrules

This adds previously untranslatable strings "Yes" and "No"
from yesnobox.h.

CCMAIL: kde-i18n-doc@kde.org
REVIEW: 123311

kcmkwin/kwinrules/Messages.sh

@@ -1,4 +1,4 @@
 #! /usr/bin/env bash
 $EXTRACTRC *.ui >> rc.cpp || exit 11
-$XGETTEXT *.cpp -o $podir/kcmkwinrules.pot
+$XGETTEXT *.cpp *.h -o $podir/kcmkwinrules.pot
 rm -f rc.cpp