PangoAttr troubles on 32-bit platforms

[rickhg12hs]

PangoAttr type is defined with Int but other functions try to assign Int64. On a 32-bit machine, this causes a problem.

$ ./julia 
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" to list help topics
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.3.0-prerelease+3456 (2014-06-03 22:37 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit dc53d93* (0 days old master)
|__/                   |  i686-redhat-linux

julia> versioninfo()
Julia Version 0.3.0-prerelease+3456
Commit dc53d93* (2014-06-03 22:37 UTC)
Platform Info:
  System: Linux (i686-redhat-linux)
  CPU: Genuine Intel(R) CPU           T2250  @ 1.73GHz
  WORD_SIZE: 32
  BLAS: libopenblas (DYNAMIC_ARCH NO_AFFINITY)
  LAPACK: libopenblas
  LIBM: libopenlibm

julia> Pkg.installed("Compose")
v"0.1.29"

julia> using Compose

julia> a = Compose.PangoAttr()
PangoAttr(nothing,nothing,nothing,nothing)

julia> Compose.update_pango_attr(a,:PANGO_ATTR_RISE,3)
ERROR: no method convert(Type{Union(Int32,Nothing)}, Int64)
 in update_pango_attr at /home/rick/.julia/v0.3/Compose/src/pango.jl:202

The issues may be here: From src/pango.jl.

# A Julia manifestation of a set of pango attributes
type PangoAttr
    rise::Maybe(Int)
    scale::Maybe(Float64)
    style::Maybe(Int)
    weight::Maybe(Int)

    function PangoAttr()
        new(nothing, nothing, nothing, nothing)
    end
end

and then further down ...

function update_pango_attr(attr::PangoAttr, attr_name::Symbol, value)
    if attr_name == :PANGO_ATTR_RISE
        attr.rise = int64(value)
    elseif attr_name == :PANGO_ATTR_SCALE
        attr.scale = value
    elseif attr_name == :PANGO_ATTR_STYLE
        attr.style = int64(value)
    elseif attr_name == :PANGO_ATTR_WEIGHT
        attr.weight = int64(value)
    end
    attr
end