udp, ws load test: fix clippy errors

aquatic_udp/src/lib/tasks.rs

@@ -10,12 +10,12 @@ use crate::config::Config;
 pub fn clean_connections_and_torrents(state: &State){
     let now = Instant::now();
 
+    {
         let mut connections = state.connections.lock();
 
         connections.retain(|_, v| v.0 > now);
         connections.shrink_to_fit();
-
-    ::std::mem::drop(connections);
+    }
 
     let mut torrents = state.torrents.lock();
     
@@ -101,6 +101,7 @@ pub fn gather_and_print_statistics(
 
     let mut peers_per_torrent = Histogram::new();
 
+    {
         let torrents = &mut state.torrents.lock();
 
         for torrent in torrents.ipv4.values(){
@@ -117,8 +118,7 @@ pub fn gather_and_print_statistics(
                 eprintln!("error incrementing peers_per_torrent histogram: {}", err)
             }
         }
-
-    ::std::mem::drop(torrents);
+    }
 
     if peers_per_torrent.entries() != 0 {
         println!(

aquatic_ws_load_test/src/network.rs

@@ -95,7 +95,7 @@ impl Connection {
     
         connections.insert(*token_counter, connection);
 
-        *token_counter = *token_counter + 1;
+        *token_counter += 1;
     
         Ok(())
     }