Code analysis recommended this

¯\_(ツ)_/¯

NadekoBot/Classes/NadekoStats.cs

@@ -14,7 +14,7 @@ using System.Timers;
 
 namespace NadekoBot
 {
-    public class NadekoStats
+    public class NadekoStats : IDisposable
     {
         public static NadekoStats Instance { get; } = new NadekoStats();
 
@@ -231,5 +231,20 @@ namespace NadekoBot
                 }
             }).ConfigureAwait(false);
         }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        private void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                carbonClient.Dispose();
+            }
+
+        }
     }
 }

NadekoBot/Modules/Searches/Commands/EvalCommand.cs

@@ -49,11 +49,11 @@ namespace NadekoBot.Modules.Searches.Commands
                 string result = parser.Parse(expression).ToString();
                 return result;
             }
-            catch (OverflowException e)
+            catch (OverflowException)
             {
                 return $"Overflow error on {expression}";
             }
-            catch (FormatException e)
+            catch (FormatException)
             {
                 return $"\"{expression}\" was not formatted correctly";
             }