Add null check for old active bluetooth device

Add null check to prevent exception

bug: 263348153
Test: make oriole-userdebug
Change-Id: I14ea9d9e7b8350c480fd636f811ce4d196984e9a
(cherry picked from commit 9ad4326bb8f56cbf898778d448a32ed36488f5d9)
Merged-In: I14ea9d9e7b8350c480fd636f811ce4d196984e9a
1 file changed