am a19ef306: Revert "Free created FileMap when uncompressing files"

Merge commit 'a19ef306bd0a257c67b50f5e0e669e9fe52b0889' into gingerbread-plus-aosp

* commit 'a19ef306bd0a257c67b50f5e0e669e9fe52b0889':
  Revert "Free created FileMap when uncompressing files"