mesonlib: Fix return type of PerMachineDefaultable.default_missing()
@@ -533,7 +533,7 @@ class PerMachineDefaultable(PerMachine[T.Optional[_T]]):
def __init__(self) -> None:
super().__init__(None, None)
- def default_missing(self) -> "PerMachine[T.Optional[_T]]":
+ def default_missing(self) -> "PerMachine[_T]":
"""Default host to build
This allows just specifying nothing in the native case, and just host in the
