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libubus: Check if remove callback exists before call it

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When process unsubscribes then remove callback is called. But it
can be NULL if not defined, so we should check it before we call it.

Signed-off-by: Lukasz Baj <l.baj@radytek.com>
This commit is contained in:
Lukasz Baj 2013-08-29 11:05:51 +02:00 committed by Felix Fietkau
parent b20a8a01c7
commit d486006ab9
1 changed files with 2 additions and 1 deletions
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1
libubus-obj.c
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@ -27,6 +27,7 @@ ubus_process_unsubscribe(struct ubus_context *ctx, struct ubus_msghdr *hdr,
return; return;
s = container_of(obj, struct ubus_subscriber, obj); s = container_of(obj, struct ubus_subscriber, obj);
if (s->remove_cb)
s->remove_cb(ctx, s, blob_get_u32(attrbuf[UBUS_ATTR_TARGET])); s->remove_cb(ctx, s, blob_get_u32(attrbuf[UBUS_ATTR_TARGET]));
} }