libcontainer: check calloc in create

Check if calloc fails and free the container if strdup later fails.

BUG=none
TEST=none

Change-Id: I93765c173312428297c1f18327f317bb3925c54f
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/340374
Reviewed-by: Ricky Zhou <rickyz@chromium.org>
1 file changed