callable: fix error case in _di_typed_trampoline
callable: fix error case in _di_typed_trampoline

If arguments conversion stopped midway, parts of args_cloned can be
uninitialized.

Signed-off-by: Yuxuan Shui <7f7e1535bcd10fa942d56a3436533af20f33203f@gmail.com>

yshui/deai,yshui/deai,yshui/deai