ch2 listing 2.12 improper with_capacity values?

[jangedoo]

In listing 2.12 Rendering the Mandlebrot set,

code/ch2/ch2-mandelbrot/src/main.rs

Line 14 in 39e24d7

let mut rows: Vec<_> = Vec::with_capacity(width); // <6>

hint number (6) says create rows with_capacity(width). Shouldn't that be ideally with_capacity(height) since we want to create height number of rows and passing height is much better?

Also few line below:

code/ch2/ch2-mandelbrot/src/main.rs

Line 17 in 39e24d7

let mut row: Vec<usize> = Vec::with_capacity(height);

let mut row: Vec<usize> = should also have Vec::with_capacity(width) instead of Vec::with_capacity(height)