Allow empty preuload_files.
When a CL only removes file, the PREUPLOAD_FILES in repohook might
be empty.
Test: None
Bug: 298222655
Change-Id: I70bb347c02c5d09a0525313087acb9c38b9a2ff2
diff --git a/automotive/vehicle/tools/generate_annotation_enums.py b/automotive/vehicle/tools/generate_annotation_enums.py
index c432e9d..fddc55b 100755
--- a/automotive/vehicle/tools/generate_annotation_enums.py
+++ b/automotive/vehicle/tools/generate_annotation_enums.py
@@ -328,7 +328,7 @@
parser = argparse.ArgumentParser(
description='Generate Java and C++ enums based on annotations in VehicleProperty.aidl')
parser.add_argument('--android_build_top', required=False, help='Path to ANDROID_BUILD_TOP')
- parser.add_argument('--preupload_files', nargs='+', required=False, help='modified files')
+ parser.add_argument('--preupload_files', nargs='*', required=False, help='modified files')
parser.add_argument('--check_only', required=False, action='store_true',
help='only check whether the generated files need update')
parser.add_argument('--output_csv', required=False,