Update import for `makeVar`
Update import for `makeVar`

`makeVar` was originally being used as `cache.makeVar` which is using the old import style which is no longer in Apollo 3. This should instead just be invoked as `makeVar` because it is imported as `import { makeVar } from "@apollo/client";`
apollostack/apollo-client,apollostack/apollo-client,apollographql/apollo-client,apollographql/apollo-client,apollostack/apollo-client