winusb: Ignore missing DeviceInterfaceGUID Closes #948 Signed-off-by: Tormod Volden <debian.tormod@gmail.com> Signed-off-by: Nathan Hjelm <hjelmn@google.com>

diff --git a/libusb/os/windows_winusb.c b/libusb/os/windows_winusb.c
index 1fdc703..4ddd3dc 100644
--- a/libusb/os/windows_winusb.c
+++ b/libusb/os/windows_winusb.c

@@ -1626,7 +1626,9 @@
 					s = pRegQueryValueExA(key, "DeviceInterfaceGUID", NULL, &reg_type,
 						(LPBYTE)guid_string, &size);
 				pRegCloseKey(key);
-				if (s != ERROR_SUCCESS) {
+				if (s == ERROR_FILE_NOT_FOUND) {
+					break; /* no DeviceInterfaceGUID registered */
+				} else if (s != ERROR_SUCCESS) {
 					usbi_warn(ctx, "unexpected error from pRegQueryValueExA for '%s'", dev_id);
 					break;
 				}

diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 6b45e58..ca46981 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h

@@ -1 +1 @@
-#define LIBUSB_NANO 11636
+#define LIBUSB_NANO 11637