Revert "why"

This reverts commit 67281e053e28100e49b7165f9ba7e529bad47ab0.
Revert "lib/lzo: Rename lzo1x_decompress.c to lzo1x_decompress_safe.c"

This reverts commit 22dd2a040bb1bbd9d3a6309b3fffcb5a7ae8ab04.