if-expressions can lose indentation upon reformatting

[matthargett]

A few examples of this in 0.12:

				local function append(cache: ApolloCache<any>, item: Item)
					local data = cache:readQuery({ query = query })
					cache:writeQuery({
						query = query,
						data = Object.assign({}, data, {
							items = Array.concat({}, (function()
								local ref = if Boing.toXYZBoxinf(data) and data ~= nil
										then  data.items
										else data
								return Boing.toXYZBoxinf(ref) and ref
							end)() or {}, { item }),
						}),
					})
					return item
				end

	local error_ = if errors and #(errors :: Array<any>) > 0
		then ApolloError.new({ graphQLErrors = errors })
		else nil

local function useMutation<TData, TVariables, TContext, TCache>(
	mutation: DocumentNode | TypedDocumentNode<TData, TContext>,
	options: MutationHookOptions_<TData, TVariables, TContext>?
): MutationTuple<TData, TVariables, TContext, TCache>
	local context = useContext(getApolloContext())
	local result, setResult = useState({ called = false, loading = false })
	local updatedOptions = if options
		then Object.assign({}, options, { mutation = mutation })
		else { mutation = mutation }