expand: Fix buffer overflow in expandmeta

The native version of expandmeta allocates a buffer that may be
overrun for two reasons.  First of all the size is 1 byte too small
but this is normally hidden because the minimum size is rounded
up to 2048 bytes.  Secondly, if the directory level is deep enough,
any buffer can be overrun.

This patch fixes both problems by calling realloc when necessary.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

0 files changed, 0 insertions, 0 deletions