Fix clippy in beta toolchain (#4299)

* clippy::lines_filter_map_ok

* clippy::ineffective-open-options

explorer-api/src/geo_ip/location.rs

@@ -61,7 +61,7 @@ impl FailedIpAddresses {
         if Path::new(&file_path).exists() {
             if let Ok(file) = File::open(&file_path) {
                 let lines = io::BufReader::new(file).lines();
-                for ip in lines.flatten() {
+                for ip in lines.map_while(Result::ok) {
                     failed_ips.insert(ip);
                 }
             }

service-providers/network-requester/src/request_filter/allowed_hosts/hosts.rs

@@ -96,11 +96,7 @@ impl HostsStore {
     /// Appends a line of `text` to the storefile at `path`
     pub(super) fn append(path: &Path, text: &str) {
         use std::io::Write;
-        let mut file = OpenOptions::new()
-            .write(true)
-            .append(true)
-            .open(path)
-            .unwrap();
+        let mut file = OpenOptions::new().append(true).open(path).unwrap();
 
         if let Err(e) = writeln!(file, "{text}") {
             log::error!("Couldn't write to file: {e}");