tree b5f4ed09c3b18808c1eaa9c160ed65cfe8b5b30a
parent 5ba3f5f7a5aaa518bd1b17b577a4e7d0010e4c9a
author David Horstmann <david.horstmann@arm.com> 1710176523 +0000
committer David Horstmann <david.horstmann@arm.com> 1710176523 +0000

Do not attempt to wipe output buffer if it is NULL

If the output buffer is NULL, it either:

* Does not need wiping because it is zero-length.
* Has failed allocation of a copy.
* Has not yet been written to as a copy hasn't been allocated.

In any of these circumstances, we should not try to write the buffer,
so perform a NULL check before wiping it.

Signed-off-by: David Horstmann <david.horstmann@arm.com>