After commit 
05be5e273c84 ("selftests: mptcp: add disconnect tests")
the mptcp selftests leave behind a couple of tmp files after
each run. run_tests_disconnect() misnames a few variables used to
track them. Address the issue setting the appropriate global variables
Fixes: 05be5e273c84 ("selftests: mptcp: add disconnect tests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
        run_tests_lo "$ns1" "$ns1" dead:beef:1::1 1 "-I 3 -i $old_cin"
 
        # restore previous status
-       cout=$old_cout
-       cout_disconnect="$cout".disconnect
+       sin=$old_sin
+       sin_disconnect="$cout".disconnect
        cin=$old_cin
        cin_disconnect="$cin".disconnect
        connect_per_transfer=1