[frontend] Fix build warnings

Iceshrimp.Frontend/Core/Schemas/StoredUser.cs

@@ -3,7 +3,7 @@ using Iceshrimp.Shared.Schemas;
 
 namespace Iceshrimp.Frontend.Core.Schemas;
 
-public class StoredUser() : UserResponse
+public class StoredUser : UserResponse
 {
 	[JsonPropertyName("token")] public required string Token { get; set; }
 }

Iceshrimp.Frontend/Core/Services/SessionService.cs

@@ -1,6 +1,5 @@
 using Blazored.LocalStorage;
 using Iceshrimp.Frontend.Core.Schemas;
-using Iceshrimp.Shared.Schemas;
 using Microsoft.AspNetCore.Components;
 
 namespace Iceshrimp.Frontend.Core.Services;
@@ -50,7 +49,7 @@ internal class SessionService
 		WriteUsers();
 	}
 
-	private StoredUser? GetUserById(string id)
+	private StoredUser GetUserById(string id)
 	{
 		var user = Users[id];
 		return user;

Iceshrimp.Frontend/Pages/Login.razor

@@ -36,6 +36,14 @@
         Loading = true;
         try
         {
+            if (Username == null || Password == null)
+            {
+                Loading = false;
+                Failure = true;
+                StateHasChanged(); // Manually triggering a state update, else component will not re-render.
+                return;
+            }
+
             var res = await Api.Auth.Login(new AuthRequest { Username = Username, Password = Password });
             switch (res.Status)
             {
@@ -70,4 +78,5 @@
             StateHasChanged(); // Manually triggering a state update, else component will not re-render.
         }
     }
+
 }

Iceshrimp.Frontend/Pages/Timeline.razor

@@ -6,28 +6,28 @@
 @inject SessionService    Session
 @inject NavigationManager Navigation
 <h3>Timeline</h3>
-@if (username != null)
+@if (_username != null)
 {
-    <span>You are logged in as @username </span>
+    <span>You are logged in as @_username </span>
     <AuthorizeView>
         <p>Authorization says you are @context.User.Identity!.Name</p>
     </AuthorizeView>
     <button @onclick="Logout">Logout</button>
-}else
+}
+else
 {
     <span>Not logged in</span>
 }
 
 
-
 @code {
-    private string? username;
+    private string? _username;
 
     protected override void OnInitialized()
     {
         if (Session.Current != null)
         {
-            username = Session.Current.Username;
+            _username = Session.Current.Username;
         }
     }
 
@@ -36,4 +36,5 @@
         Session.EndSession();
         Navigation.NavigateTo("/login");
     }
+
 }