Fix warnings

src/DevilDaggersInfo.Web.Client/HttpClients/ApiHttpClient.cs

@@ -20,12 +20,10 @@ protected ApiHttpClient(HttpClient client, ILocalStorageService localStorageServ
 
 	protected async Task<HttpResponseMessage> SendRequest(HttpMethod httpMethod, string url, JsonContent? body = null)
 	{
-		HttpRequestMessage request = new()
-		{
-			RequestUri = new Uri(url, UriKind.Relative),
-			Method = httpMethod,
-			Content = body,
-		};
+		using HttpRequestMessage request = new();
+		request.RequestUri = new Uri(url, UriKind.Relative);
+		request.Method = httpMethod;
+		request.Content = body;
 		string? token = await _localStorageService.GetItemAsStringAsync(AdminAuthenticationStateProvider.LocalStorageAuthKey);
 		if (token != null)
 			request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);

src/DevilDaggersInfo.Web.Server.Domain.Admin/Services/ModService.cs

@@ -145,10 +145,8 @@ private static Dictionary<BinaryName, byte[]> GetBinaryNames(List<(string Name,
 		foreach ((string name, byte[] data) in binaries)
 		{
 			BinaryName binaryName = new(ModBinaryToc.DetermineType(data), name);
-			if (dict.ContainsKey(binaryName))
+			if (!dict.TryAdd(binaryName, data))
 				throw new InvalidModArchiveException("Binary names must all be unique.");
-
-			dict.Add(binaryName, data);
 		}
 
 		return dict;