Simplified some Rust code.

rust/examples/qrcodegen-worker.rs

@@ -102,10 +102,7 @@ fn read_int() -> i16 {
 	let mut chrs: Vec<char> = line.chars().collect();
 	assert_eq!(chrs.pop().unwrap(), '\n');
 	let line: String = chrs.iter().cloned().collect();
-	match line.parse::<i16>() {
-		Ok(x) => x,
-		Err(_) => panic!("Invalid number"),
-	}
+	line.parse::<i16>().expect("Invalid number")
 }
 
 

rust/src/lib.rs

@@ -927,10 +927,8 @@ impl QrSegment {
 		let mut accumdata: u32 = 0;
 		let mut accumcount: u32 = 0;
 		for c in text {
-			let i = match ALPHANUMERIC_CHARSET.iter().position(|x| *x == *c) {
-				None => panic!("String contains unencodable characters in alphanumeric mode"),
-				Some(j) => j,
-			};
+			let i = ALPHANUMERIC_CHARSET.iter().position(|x| *x == *c)
+				.expect("String contains unencodable characters in alphanumeric mode");
 			accumdata = accumdata * 45 + (i as u32);
 			accumcount += 1;
 			if accumcount == 2 {