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isotpsniffer: fix error handling, "0" is a valid filedescriptor 

Fixes: b04108c615 ("isotpsniffer: Fix error handling")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
pull/177/head
Marc Kleine-Budde 2019-12-02 11:20:03 +01:00
parent 9ae877ce32
commit b6a44803fd
1 changed files with 3 additions and 3 deletions
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6
isotpsniffer.c
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@ -177,7 +177,7 @@ void printbuf(unsigned char *buffer, int nbytes, int color, int timestamp,
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
fd_set rdfs; fd_set rdfs;
int s = 0, t = 0; int s = -1, t = -1;
struct sockaddr_can addr; struct sockaddr_can addr;
char if_name[IFNAMSIZ]; char if_name[IFNAMSIZ];
static struct can_isotp_options opts; static struct can_isotp_options opts;
@ -392,9 +392,9 @@ int main(int argc, char **argv)
} }
out: out:
if (s) if (s != -1)
close(s); close(s);
if (t) if (t != -1)
close(t); close(t);
return r; return r;