When UUS info is null, set array size 0.

When dial request is called, NO_MEMORY binder error occured.
Regarding aidl generation, array size should be 0.

Bug: 212775369

Signed-off-by: Sungjae <sung_jae.kim@samsung.com>
Change-Id: I398fdda7a88592250a2c547d63ad551ce1b9fdd9