Fix dlfree error when delet mZipInflater

_CompressedAsset::close() and _CompressedAsset::getBuffer() may
delete mZipInflater object without mutex protection. This may cause muti
threading race condition when two thread trying to delete mZipInflater
object at the same time. Fix this issue by adding auto local mutex lock in
_CompressedAsset::close() and _CompressedAsset::getBuffer().

Change-Id: I4ba059e51706ca64433a3289fd7dbc99dca48fda
2 files changed