Message interception via whitespace-sensitive policy parsing

Information disclosure in xdg-dbus-proxy before 0.1.7 allows local users to intercept restricted D-Bus messages via policy rules. The policy parser recognizes eavesdrop=true but fails to treat equivalent forms such as eavesdrop ='true' as eavesdrop rules, so the filter omits the intended restriction. A local client with access to the proxied bus can exploit the mismatch to read messages outside its configured policy, without altering data or interrupting service.