From Florent Drouin: don't crash if the open of the USB bus directory

fails.

diff --git a/pcap-usb-linux.c b/pcap-usb-linux.c
index 7265a9c1300b68ee272f2602068a99d592832cc1..d1d09271bad1c3b13cde6c6b2205bc74f1afd636 100644 (file)
--- a/pcap-usb-linux.c
+++ b/pcap-usb-linux.c
@@ -149,6 +149,7 @@ usb_platform_finddevs(pcap_if_t **alldevsp, char *err_str)
 
        /* scan profs usb bus directorys */
        dir = opendir(USB_BUS_DIR);
+       if (!dir) return 0;
        while ((ret == 0) && ((data = readdir(dir)) != 0)) {
                int n;
                char* name = data->d_name;