Fix crash with secondary dex files on low RAM devices. am: 50419f2d4c am: 3bff7d0496 am: 0c8a9ca384

Original change: https://android-review.googlesource.com/c/platform/art/+/1661964

Change-Id: I08c6d0104fa2ff00170c0e88d4e241185f19e18a