floss: Fix scoping of property vector for eir

Fix the scoping of the vector that holds the eir uuids for the uuid
property. Previously, it was going out of scope and corrupting the
reported uuid values.

Bug: 245794678
Tag: #floss
Test: Manual test on ChromeOS.
Change-Id: I339580d6885336971511484ad1c39c099bcf4c75