USN-4466-2: curl vulnerability

USN-4466-2: curl vulnerability

USN-4466-1 fixed a vulnerability in curl. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Marc Aldorasi discovered that curl incorrectly handled the libcurl
CURLOPT_CONNECT_ONLY option. This could result in data being sent to the
wrong destination, possibly exposing sensitive information.
Source: USN-4466-2: curl vulnerability