releasetools: Fix the rebuilding of vbmeta.img.
If only vbmeta.img is missing from the target_files.zip,
'add_img_to_target_files.py -a' will fail to re-create vbmeta.img.
++++ vbmeta ++++
Traceback (most recent call last):
File "./build/make/tools/releasetools/add_img_to_target_files.py", line 693, in <module>
main(sys.argv[1:])
File "./build/make/tools/releasetools/add_img_to_target_files.py", line 687, in main
AddImagesToTargetFiles(args[0])
File "./build/make/tools/releasetools/add_img_to_target_files.py", line 584, in AddImagesToTargetFiles
boot_contents = boot_image.WriteToTemp()
AttributeError: 'NoneType' object has no attribute 'WriteToTemp'
Because it has skipped loading the boot.img, which leads to the above error.
Bug: 63456822
Test: As follows:
$ zip -d target_files.zip vbmeta.img
$ add_img_to_target_files.py -a target_files.zip
Test: `m dist` on aosp_arm64-userdebug
Change-Id: Ieba5f0b6848c3ec5d8bcfd24d48cc5af8b39f06c
1 file changed
