minor: fix clippy errors on 1.49 (#281)

Author: saghm

src/client/options/mod.rs

@@ -681,9 +681,10 @@ impl ClientOptions {
     /// used in the SRV tests.
     #[cfg(test)]
     pub(crate) fn new_srv() -> Self {
-        let mut options = Self::default();
-        options.original_srv_hostname = Some("localhost.test.test.build.10gen.cc".into());
-        options
+        Self {
+            original_srv_hostname: Some("localhost.test.test.build.10gen.cc".into()),
+            ..Default::default()
+        }
     }
 
     /// Parses a MongoDB connection string into a ClientOptions struct. If the string is malformed

src/cmap/test/integration.rs

@@ -122,20 +122,22 @@ async fn concurrent_connections() {
     });
     futures::future::join_all(tasks).await;
 
-    // ensure all three ConnectionCreatedEvents were emitted before one ConnectionReadyEvent.
-    let events = handler.events.read().unwrap();
-    let mut consecutive_creations = 0;
-    for event in events.iter() {
-        match event {
-            Event::ConnectionCreated(_) => {
-                consecutive_creations += 1;
-            }
-            Event::ConnectionReady(_) => {
-                if consecutive_creations < 2 {
-                    panic!("connections not created concurrently");
+    {
+        // ensure all three ConnectionCreatedEvents were emitted before one ConnectionReadyEvent.
+        let events = handler.events.read().unwrap();
+        let mut consecutive_creations = 0;
+        for event in events.iter() {
+            match event {
+                Event::ConnectionCreated(_) => {
+                    consecutive_creations += 1;
+                }
+                Event::ConnectionReady(_) => {
+                    if consecutive_creations < 2 {
+                        panic!("connections not created concurrently");
+                    }
                 }
+                _ => (),
             }
-            _ => (),
         }
     }