Fixed sign-compare warnings.

diff --git a/channels/urbdrc/client/libusb/libusb_udevice.c b/channels/urbdrc/client/libusb/libusb_udevice.c
index a8e5444..316736e 100644 (file)
--- a/channels/urbdrc/client/libusb/libusb_udevice.c
+++ b/channels/urbdrc/client/libusb/libusb_udevice.c
@@ -631,7 +631,7 @@ static int udev_get_hub_handle(UDEVICE* pdev, UINT16 bus_number, UINT16 dev_numb
                        }
                        while (p1 != NULL);
 
-                       if ((p2 - sysfs_path) < (strlen(sysfs_path) - 2U))
+                       if ((size_t)((p2 - sysfs_path) + 2U) < strlen(sysfs_path))
                        {
                                p1 = (char*) sysfs_path;