Fixup InstallAPI post merge

[cyndyishida]

AM merge introduced some test failures.

[cyndyishida]

@swift-ci please test

[cyndyishida]

Looks like unrelated failures in swift build.

/Users/ec2-user/jenkins/workspace/apple-llvm-project-pr-macos/branch-next/swift/include/swift/Localization/LocalizationFormat.h:80:49: error: use of undeclared identifier 'little'
    endian::write<offset_type>(out, dataLength, little);
                                                ^
/Users/ec2-user/jenkins/workspace/apple-llvm-project-pr-macos/branch-next/swift/include/swift/Localization/LocalizationFormat.h:87:39: error: use of undeclared identifier 'little'
    endian::write<key_type>(out, key, little);
                                      ^
/Users/ec2-user/jenkins/workspace/apple-llvm-project-pr-macos/branch-next/swift/include/swift/Localization/LocalizationFormat.h:123:39: error: use of undeclared identifier 'little'; did you mean 'little_t'?
        endian::readNext<offset_type, little, unaligned>(data);
                                      ^~~~~~
                                      little_t