Re: [PKT_SCHED] ematch: tcf_em_destroy robustness

From: Stephen Hemminger <redacted>
Date: Fri, 8 Feb 2008 10:48:32 -0800

Make the code in tcf_em_tree_destroy more robust and cleaner:
 * Don't need to cast pointer to kfree() or avoid passing NULL.
 * After freeing the tree, clear the pointer to avoid possible problems
from repeated free.

Signed-off-by: Stephen Hemminger <redacted>

Applied, thanks.