Fix potential double destroy of AssetManager
Assume there is a XmlBlock [X] created by a AssetManager [A]
([A] will have mNumRefs = 2). After [A].close is called
(mNumRefs = 1) and then both [X] and [A] are going to be GCed,
if [A].finalize is called first (nativeDestroy), the later
[X].finalize will invoke [A].xmlBlockGone that triggers the
second nativeDestroy of [A] and leads to crash.
By clearing the mObject in AssetManager.finalize, the
decRefsLocked from other paths won't call nativeDestroy again.
Test: atest AssetManagerTest
Test: Build and install CorePerfTests
adb shell am instrument -w -r --no-hidden-api-checks -e class \
(cherry picked from commit 0a8a1e9d40a3cdff06150c43c623fa4c415226b6)
1 file changed