Define "anonymous struct" before using it in section 6.1

[dariuswiles]

The text below listing 6-2 in section 6.1 states:
"Move includes an anonymous struct inside it."

I believe this is the first time the concept of an anonymous struct is discussed. I cannot find a definition in sections 5 to 5.3, which introduce structs.

I suggest either adding an explanation of anonymous structs to one of the structs sections; or changing the example code in listing 6-2 and its accompanying text so that it does not use an anonymous struct.

[limuyuan]

@carols10cents why closed? I also have the same concern.

[limuyuan]

@carols10cents why closed? I also have the same concern.

I checked commits and found-
This issue was already fixed in 07325bf

Thank you Carol