fixed nullref in blacklist

src/EllieBot/Db/Extensions/SelfAssignableRolesExtensions.cs

@@ -1,22 +0,0 @@
-#nullable disable
-using Microsoft.EntityFrameworkCore;
-using EllieBot.Db.Models;
-
-namespace EllieBot.Db;
-
-public static class SelfAssignableRolesExtensions
-{
-    public static bool DeleteByGuildAndRoleId(this DbSet<SelfAssignedRole> roles, ulong guildId, ulong roleId)
-    {
-        var role = roles.FirstOrDefault(s => s.GuildId == guildId && s.RoleId == roleId);
-
-        if (role is null)
-            return false;
-
-        roles.Remove(role);
-        return true;
-    }
-
-    public static IReadOnlyCollection<SelfAssignedRole> GetFromGuild(this DbSet<SelfAssignedRole> roles, ulong guildId)
-        => roles.AsQueryable().Where(s => s.GuildId == guildId).ToArray();
-}

src/EllieBot/_common/Services/Impl/BlacklistService.cs

@@ -1,4 +1,3 @@
-#nullable disable
 using LinqToDB;
 using LinqToDB.Data;
 using LinqToDB.EntityFrameworkCore;
@@ -53,8 +52,7 @@ public sealed class BlacklistService : IExecOnMessage, IReadyExecutor
 
     private ValueTask OnReload(BlacklistEntry[] newBlacklist)
     {
-        if (newBlacklist is null)
-            return default;
+        newBlacklist ??= [];
 
         blacklistedGuilds =
             new HashSet<ulong>(newBlacklist.Where(x => x.Type == BlacklistType.Server).Select(x => x.ItemId))
@@ -69,9 +67,9 @@ public sealed class BlacklistService : IExecOnMessage, IReadyExecutor
         return default;
     }
 
-    public Task<bool> ExecOnMessageAsync(IGuild guild, IUserMessage usrMsg)
+    public Task<bool> ExecOnMessageAsync(IGuild? guild, IUserMessage usrMsg)
     {
-        if (blacklistedGuilds.Contains(guild.Id))
+        if (guild is not null && blacklistedGuilds.Contains(guild.Id))
         {
             Log.Information("Blocked input from blacklisted guild: {GuildName} [{GuildId}]",
                 guild.Name,