Replace stray paren.

Signed-off-by: Michael Markert <markert.michael@googlemail.com>
Only try to download if a URL was extracted successfully.

`url-queue-retrieve' was called unconditionally on `dl'.

Signed-off-by: Michael Markert <markert.michael@googlemail.com>
Merge pull request #6 from cofi/master

Fix "Bad url" errors.