core/rbtree: remove redundant if()-condition in rb_erase()

See kernel commit 4b324126e0c6c3a5080ca3ec0981e8766ed6f1ee

----
Furthermore, notice that the initial checks:

        if (!node->rb_left)
                child = node->rb_right;
        else if (!node->rb_right)
                child = node->rb_left;
        else
        {
                ...
        }
guarantee that old->rb_right is set in the final else branch, therefore
we can omit checking that again.

Signed-off-by: Wolfram Strepp <wstrepp@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
----

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

0 files changed, 0 insertions, 0 deletions