tc: fix compilation with old gcc (< 4.6) (bis)

Commit 8f80d450c3cb ("tc: fix compilation with old gcc (< 4.6)") was reverted
to ease the merge of the net-next branch.

Here is the new version.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
1 file changed