Fix fatal exception while accessing radio stats

Check the size of per radio tx time per power level array
before accessing the contents of array.

Bug: 173258839
Test: Manual - Connect Pixel to AP and leave the screen on for one hour.
Change-Id: Icb8c93dcb9e5df1d5badefee85d73ac7e22de03e
1 file changed
tree: 5c91197cc13b20ca967e526c1bdac16735308b6a
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg