Changed &Newtype(ref mut k) to &mut Newtype(ref mut k)
Changed &Newtype(ref mut k) to &mut Newtype(ref mut k)

Previously where self was an &mut of a newtype we could write

&Newtype(ref mut k) = self;

to get a mutable reference to the inner type, now rustc requires that we
write

&mut Newtype(ref mut k) = self;

instead.

markuskobler/sodiumoxide,maidsafe/sodiumoxide,romanb/sodiumoxide,Fraser999/sodiumoxide