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-rw-r--r--hostapd/ctrl_iface.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index d56599b..0939d6e 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -1877,13 +1877,13 @@ static int hostapd_ctrl_iface_vendor(struct hostapd_data *hapd, char *cmd,
/* cmd: <vendor id> <subcommand id> [<hex formatted data>] */
vendor_id = strtoul(cmd, &pos, 16);
- if (!isblank(*pos))
+ if (!isblank((unsigned char) *pos))
return -EINVAL;
subcmd = strtoul(pos, &pos, 10);
if (*pos != '\0') {
- if (!isblank(*pos++))
+ if (!isblank((unsigned char) *pos++))
return -EINVAL;
data_len = os_strlen(pos);
}