@enum with specified values triggers missing reference

[takbal]

Specifying values for @enum seems to trigger a missing reference warning:

julia> using StaticLint

julia> cst,hints = StaticLint.lint_string("@enum Foo x; export x", gethints=true); hints
Tuple{CSTParser.EXPR,String}[]

julia> cst,hints = StaticLint.lint_string("@enum Foo x=1; export x", gethints=true); hints
2-element Array{Tuple{CSTParser.EXPR,String},1}:
 (  1:1   x, "Missing reference at offset 10")
 (  1:1   x, "Missing reference at offset 22")