fix error checking of asprintf

see man asprintf
  [...]
  RETURN VALUE
   When  successful, these  functions return the number of bytes printed, just like sprintf(3).
   If memory allocation wasn't possible, or some other error occurs, these functions will return -1,
   and the contents of strp is undefined.

Signed-off-by: Frank Meerkötter <frank@meerkoetter.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/ubus.c b/ubus.c
index 7b85930..d6d4188 100644
--- a/ubus.c
+++ b/ubus.c
@@ -727,8 +727,7 @@ netifd_ubus_add_interface(struct interface *iface)
 	struct ubus_object *obj = &iface->ubus;
 	char *name = NULL;
 
-	asprintf(&name, "%s.interface.%s", main_object.name, iface->name);
-	if (!name)
+	if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
 		return;
 
 	obj->name = name;