Checksum failed on libgit2

[TJLW]

Seems to be self explanatory. I simply changed the checksum in recipes/libgit2/libgit2.recipe.

Task failed (see build/libgit2/download.log for full logs):
================================
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   124    0   124    0     0    363      0 --:--:-- --:--:-- --:--:--   362
100 3970k  100 3970k    0     0  2491k      0  0:00:01  0:00:01 --:--:-- 8164k
error: checksum failed on path: expected 02ff3374da7fdf116984adf41749db7b4d0a5877, got 9dcb87f8d233bccb4d615964fe24d6fec4d381a8
moving download/v0.23.4.tar.gz to download/v0.23.4.tar.gz.fail
================================
make: *** [build/libgit2/download.done] Error 1