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a0bce18192
devif/ipv4_input.c: In function ‘ipv4_in’:
devif/ipv4_input.c:305:15: warning: declaration of ‘ret’ shadows a previous local [-Wshadow]
305 | int ret = ipv4_forward(dev, ipv4);
| ^~~
devif/ipv4_input.c:151:7: note: shadowed declaration is here
151 | int ret = OK;
| ^~~
Signed-off-by: chao an <anchao@xiaomi.com>