Minor code cleanup

src/main.rs

@@ -535,9 +535,7 @@ where
         // ISOC-RFC 3986, we could use BufRead::read_line here, but that does
         // not allow us to cap the number of read bytes at 1024+2.
         let result = loop {
-            let bytes_read = if let Ok(read) = self.stream.read(buf).await {
-                read
-            } else {
+            let Ok(bytes_read) = self.stream.read(buf).await else {
                 break Err((BAD_REQUEST, "Request ended unexpectedly"));
             };
             len += bytes_read;
@@ -575,7 +573,9 @@ where
         }
 
         // correct host
-        if let Some(domain) = url.domain() {
+        let Some(domain) = url.domain() else {
+            return Err((BAD_REQUEST, "URL does not contain a domain"));
+        };
         // because the gemini scheme is not special enough for WHATWG, normalize
         // it ourselves
         let host = Host::parse(
@@ -592,9 +592,6 @@ where
         if !ARGS.hostnames.is_empty() && !ARGS.hostnames.iter().any(|h| h == &host) {
             return Err((PROXY_REQUEST_REFUSED, "Proxy request refused"));
         }
-        } else {
-            return Err((BAD_REQUEST, "URL does not contain a domain"));
-        }
 
         // correct port
         if let Some(expected_port) = self.local_port_check {
@@ -737,10 +734,7 @@ where
             .add(b'}');
 
         // check if directory listing is enabled by getting preamble
-        let preamble = if let Ok(txt) = std::fs::read_to_string(path.join(".directory-listing-ok"))
-        {
-            txt
-        } else {
+        let Ok(preamble) = std::fs::read_to_string(path.join(".directory-listing-ok")) else {
             self.send_header(NOT_FOUND, "Directory index disabled.")
                 .await?;
             return Ok(());