Guard against NPE in the Settings Tile lib

Bug: 286690307
Test: robotest
Change-Id: I41556971cd9e46cf68e6db606e9ee9f5d49e53b5
Merged-In: I41556971cd9e46cf68e6db606e9ee9f5d49e53b5
(cherry picked from commit 3aead1cbc921df5707233e4e9770e2fb73571263)
1 file changed