am e8246ff7: Merge "Fixed out of bounds exception while handling app crash" into mnc-dev

    void handleAppCrashLocked(ProcessRecord app) {

        for (int displayNdx = mActivityDisplays.size() - 1; displayNdx >= 0; --displayNdx) {

            final ArrayList<ActivityStack> stacks = mActivityDisplays.valueAt(displayNdx).mStacks;

            final int numStacks = stacks.size();

            for (int stackNdx = 0; stackNdx < numStacks; ++stackNdx) {

                final ActivityStack stack = stacks.get(stackNdx);

                stack.handleAppCrashLocked(app);

            int stackNdx = stacks.size() - 1;

            while (stackNdx >= 0) {

                stacks.get(stackNdx).handleAppCrashLocked(app);

                stackNdx--;

            }

        }

    }