compress: Fix silly typo in pstore_extent__decompress()
compress: Fix silly typo in pstore_extent__decompress()

This patch fixes breakage caused by commit
7fc7055466cecbc1e3558a58fa8104bb397bd226 ("Don't use self->mmap in
pstore_extent__decompress()").

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@cs.helsinki.fi>

penberg/pstore,penberg/pstore,penberg/pstore,penberg/pstore