CA-38105: remove a unix domain socket leak in an error path.
CA-38105: remove a unix domain socket leak in an error path.

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@eu.citrix.com>

djs55/forkexecd,xapi-project/message-switch,johnelse/forkexecd,xapi-project/message-switch,xapi-project/message-switch