evaluate: do not skip mapping elements

Set element keys are of EXPR_SET_ELEM expression type, however, mappings
use the EXPR_MAPPING expression to wrap the EXPR_SET_ELEM key
(mapping->left) and the corresponding data (mapping->right).

This patch adds a wrapper function to fetch the EXPR_SET_ELEM expression
from the key in case of mappings and use it.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions