Fix users not getting registered

src/context.rs

@@ -25,20 +25,21 @@ impl Context {
     }
 
     pub fn register_user(&mut self, addr: &SocketAddr) -> Result<(), ()> {
-        let mut user;
+        let mut users = self.users.lock().unwrap();
-        {
+        let cloned = {
-            user = self.users.lock().unwrap().get_mut(addr).cloned();
+            users.get(addr).cloned()
-        }
+        };
-        match user {
+        
-            Some(mut user) => {
+        match cloned {
-                if !user.is_valid() || user.is_registered() {
+            Some(cloned) => {
+                if !cloned.is_valid() || cloned.is_registered() {
                     return Err(());
                 }
-                if self.users.lock().unwrap().iter().any(|(k, v)| k != addr && v.nickname == user.nickname) {
+                if users.iter().any(|(k, v)| k != addr && v.nickname == cloned.nickname) {
                     return Err(());
                 }
                 
-                user.register(); // TODO: This is done on the cloned user -- won't save
+                users.get_mut(addr).unwrap().register();
                 Ok(())
             },
             None => Err(())