For cancelled decodes, skip the cache save, since it may be incorrect

Especially if it's null, this would cause future cache hits to think the key
has a null result

Bug: 17721894
Change-Id: I7930f8ab8515c8ea8201a0594fc2cbf228959b7b
1 file changed
tree: 37f315a5c4ea91ff1d51583406db289254b80f57
  1. res/
  2. sample/
  3. src/
  4. Android.mk
  5. AndroidManifest.xml