Avoid crash when socket address lenght is bigger than 126

Here my socket address:
:0.0.unix:abstract=/tmp/dbus-30Xo0YvOro,guid=c12ee38be195441e0b64c7ff5208e716.383c17da53f7fc81db94ac5f5171b40b-1376315157.910552-1882544957.=unknown=.@unknown@.!unknown!
change cursor/selection when changing theme