No point calling the no-fail-alloc if you check for failure and your
only caller checks for failure.
No point calling calloc to zero fill memory you're about to memcpy over.
In the unlikely event of a loss of memory allocation, drop your previous
allocations before returning to others.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>