message: Remove commas after last item in enumeration.
  This brings these enums to match the rest of the code and fixes
  2 warnings under clang about using C++11 extensions.
diff: @@ -220,7 +220,7 @@ enum ImGuiDataType
  {
  ImGuiDataType_Int,
  ImGuiDataType_Float,
  - ImGuiDataType_Float2,
  + ImGuiDataType_Float2
  };
  enum ImGuiDir
  @@ -229,7 +229,7 @@ enum ImGuiDir
  ImGuiDir_Left = 0,
  ImGuiDir_Right = 1,
  ImGuiDir_Up = 2,
  - ImGuiDir_Down = 3,
  + ImGuiDir_Down = 3
  };
  enum ImGuiCorner
  