Utilize `if..let` instead of single `match` branch

[frewsxcv]

rust/src/librustc_trans/trans/type_of.rs

Lines 320 to 323 in 98a59cf

	match cx.lltypes().borrow().get(&t) {
	Some(&llty) => return llty,
	None => ()
	}

More info: https://doc.rust-lang.org/book/if-let.html

[eddyb]

There are matches like this all over the place. I just replaced some of the ones in trans in a branch I'm working on atm.

[durka]

Clippy's single_match lint should help finding them.

[nxnfufunezn]

or maybe this would help

ag "match.+\n\s+Some.+\n\s+(None|_) => (\(\)|\{\})"

[dileepbapat]

can I pick this up?

[frewsxcv]

@dileepbapat Go for it! Let us know if you need any help

[dileepbapat]

@frewsxcv let me know if this is ok

[frewsxcv]

@dileepbapat Looks good, nice job! Your changes are waiting in a queue to be merged:

http://buildbot.rust-lang.org/homu/queue/rust

[durka]

This can be closed now.

[frewsxcv]

Thanks again @dileepbapat!