Remove ason_clone_into_d

The last user of this didn't actually need it.

Signed-off-by: Casey Dahlin <casey.dahlin@gmail.com>
Fix leaked temp string in parser_test

Signed-off-by: Casey Dahlin <casey.dahlin@gmail.com>
Test to ensure ason_read arguments don't transfer ownership

Signed-off-by: Casey Dahlin <casey.dahlin@gmail.com>
Add object append test to value_test

Signed-off-by: Casey Dahlin <casey.dahlin@gmail.com>
Remember to duplicate string value when cloning

Signed-off-by: Casey Dahlin <casey.dahlin@gmail.com>