message: Add .0 in storage getters to migration guise [ci skip]
diff: @@ -45,6 +45,10 @@ Integration tests:
  - Replace `cosmwasm_vm::ReadonlyStorage` with `cosmwasm_vm::Storage`, which now
  contains all backend storage methods.
  +- Storage getters (and iterators) now return a result of
  + `(Option<Vec<u8>>, u64)`, where the first component is the element and the
  + second one is the gas cost. Thus in a few places `.0` must be added to access
  + the element.
  ## 0.7.2 -> 0.8
  