Fix `Binary` instance for `NewtypeDecl`
-
put clss
is now executed only once rather than twice - Additionally, the variable
cls
has been renamed toclss
to reflect the fact that multiple classes can be derived
(cherry picked from commit c507ca0a)
put clss
is now executed only once rather than twicecls
has been renamed to clss
to reflect the fact that multiple classes can be derived(cherry picked from commit c507ca0a)