conntrack: slightly simplify parse_proto_num() by using strtoul()

Use strtoul() instead and remove check for negative value.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/src/conntrack.c b/src/conntrack.c
index 4afccde..859a483 100644
--- a/src/conntrack.c
+++ b/src/conntrack.c
@@ -836,12 +836,11 @@ extern struct ctproto_handler ct_proto_unknown;
 
 static int parse_proto_num(const char *str)
 {
+	unsigned long val;
 	char *endptr;
-	long val;
 
-	val = strtol(str, &endptr, 0);
+	val = strtoul(str, &endptr, 0);
 	if (val > IPPROTO_RAW ||
-	    val < 0 ||
 	    endptr == str ||
 	    *endptr != '\0')
 		return -1;