[PATCH] app/dumpcap: don't pass negative value to strerror() on error

[Stephen Hemminger]

If eth_stats_get fails (for example with -ENOTSUPP) then
dumpcap would pass that to strerror which is incorrect.

Fixes: 8744f84bb255 ("app/dumpcap: add statistics mode")
Coverity issue: 383136
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 app/dumpcap/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/dumpcap/main.c b/app/dumpcap/main.c
index 904eb5a7d7d9..64294bbfb3e6 100644
--- a/app/dumpcap/main.c
+++ b/app/dumpcap/main.c
@@ -500,7 +500,7 @@ static void statistics_loop(void)
                        if (r < 0) {
                                fprintf(stderr,
                                        "stats_get for port %u failed: %d 
(%s)\n",
-                                       p, r, strerror(r));
+                                       p, r, strerror(-r));
                                return;
                        }
 
-- 
2.39.1