ensure that lighting systems are properly disposed

Illumilib/System/CorsairLighting.cs

@@ -26,10 +26,6 @@ namespace Illumilib.System {
             }
         }
 
-        public override void Dispose() {
-            // no op
-        }
-
         public override void SetAllLighting(float r, float g, float b) {
             foreach (var device in this.devices) {
                 device.SetAllColors(r, g, b);

Illumilib/System/LightingSystem.cs

@@ -5,9 +5,11 @@ namespace Illumilib.System {
 
         public abstract LightingType Type { get; }
 
-        public abstract bool Initialize();
+        ~LightingSystem() {
+            this.Dispose();
+        }
 
-        public abstract void Dispose();
+        public abstract bool Initialize();
 
         public abstract void SetAllLighting(float r, float g, float b);
 
@@ -21,5 +23,9 @@ namespace Illumilib.System {
 
         public abstract void SetMouseLighting(float r, float g, float b);
 
+        public virtual void Dispose() {
+            GC.SuppressFinalize(this);
+        }
+
     }
 }

Illumilib/System/LogitechLighting.cs

@@ -18,6 +18,7 @@ namespace Illumilib.System {
         }
 
         public override void Dispose() {
+            base.Dispose();
             this.ClearBitmap();
             LogitechGsdk.LogiLedShutdown();
         }

Illumilib/System/RazerLighting.cs

@@ -21,6 +21,7 @@ namespace Illumilib.System {
         }
 
         public override void Dispose() {
+            base.Dispose();
             this.chroma.UninitializeAsync();
             this.effectOutdated = true;
         }