'dctx' must be non NULL, remove test.

'dctx' must be non NULL, remove test.

11030 cleanup:

	CID 1452705 (#1 of 1): Dereference before null check
	(REVERSE_INULL) check_after_deref: Null-checking dctx
	suggests that it may be null, but it has already been
	dereferenced on all paths leading to the check.

11031        if (dctx != NULL)
11032                dumpcontext_destroy(dctx);
11033        return (result);