Ecore con: Close server socket fd on failure.

Summary:
Socket fd must be closed to avoid file discripter leak.
Programs can usually only open a limited number of file descriptors,
so if this happens a lot, it may turn into a problem.

@fix

Reviewers: raster, Hermet, wonsik, spacegrapher, cedric, jpeg, tasn

Reviewed By: tasn

Subscribers: cedric, alok25, yashu21985, singh.amitesh

Differential Revision: https://phab.enlightenment.org/D3660

src/lib/ecore_con/ecore_con_local.c

@@ -418,6 +418,7 @@ fd_ready:
 error_umask:
    umask(pmode);
 error:
+   close(svr->fd);
 #endif /* HAVE_LOCAL_SOCKETS */
    return 0;
 }