Elements without line numbers are still indented as if there is a single-digit line number

[epage]

num_decimal_digits doesn't know the difference between no line numbers in the group and there being a 0 line number, causing unnecessary indentation

annotate-snippets-rs/src/renderer/render.rs

Lines 2270 to 2292 in 411dd35

	// instead of taking the String length or dividing by 10 while > 0, we multiply a limit by 10 until
	// we're higher. If the loop isn't exited by the `return`, the last multiplication will wrap, which
	// is OK, because while we cannot fit a higher power of 10 in a usize, the loop will end anyway.
	// This is also why we need the max number of decimal digits within a `usize`.
	fn num_decimal_digits(num: usize) -> usize {
	#[cfg(target_pointer_width = "64")]
	const MAX_DIGITS: usize = 20;
	#[cfg(target_pointer_width = "32")]
	const MAX_DIGITS: usize = 10;
	#[cfg(target_pointer_width = "16")]
	const MAX_DIGITS: usize = 5;
	let mut lim = 10;
	for num_digits in 1..MAX_DIGITS {
	if num < lim {
	return num_digits;
	}
	lim = lim.wrapping_mul(10);
	}
	MAX_DIGITS
	}