[PATCH] dumpcap: check return value from adding interface

[fengchengwen]

Acked-by: Chengwen Feng <fengchengwen at huawei.com>

On 2024/10/28 2:28, Stephen Hemminger wrote:
> The rte_pcapng_add_interface could fail.
> For example: running out of space for the file.
> 
> Covertity issue: 446742
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>