chain: Support unsetting NFTNL_CHAIN_USERDATA attribute

Cosmetics, but support unsetting anything that may be set.

Fixes: 76b82c425818e ("chain: add userdata and comment support")
Signed-off-by: Phil Sutter <phil@nwl.cc>

diff --git a/src/chain.c b/src/chain.c
index c7026f486b10467ce9d61c6201de6e4ebd6f42f8..0b68939fe21a7a725503625444eee680cd29d6a8 100644 (file)
--- a/src/chain.c
+++ b/src/chain.c
@@ -185,6 +185,9 @@ void nftnl_chain_unset(struct nftnl_chain *c, uint16_t attr)
                        xfree(c->dev_array[i]);
                xfree(c->dev_array);
                break;
+       case NFTNL_CHAIN_USERDATA:
+               xfree(c->user.data);
+               break;
        default:
                return;
        }