use proper unsigned type for ESSID length

diff --git a/src/print_wireless_info.c b/src/print_wireless_info.c
index a629db43f8df5cdf219528da32ec0fefd03297cc..79e4cd8e049a21168775c04b632711efd9aaf89e 100644 (file)
--- a/src/print_wireless_info.c
+++ b/src/print_wireless_info.c
@@ -125,7 +125,7 @@ static void find_ssid(uint8_t *ies, uint32_t ies_len, uint8_t **ssid, uint32_t *
     }
     if (ies_len < 2)
         return;
-    if (ies_len < 2 + ies[1])
+    if (ies_len < 2 + (uint8_t)ies[1])
         return;
 
     *ssid_len = ies[1];