Added a couple of missing 'override's

modules/juce_graphics/effects/juce_DropShadowEffect.h

@@ -97,7 +97,7 @@ public:
 
     //==============================================================================
     /** @internal */
-    void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha);
+    void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha) override;
 
 
 private:

modules/juce_graphics/effects/juce_GlowEffect.h

@@ -61,7 +61,7 @@ public:
 
     //==============================================================================
     /** @internal */
-    void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha);
+    void applyEffect (Image& sourceImage, Graphics& destContext, float scaleFactor, float alpha) override;
 
 private:
     //==============================================================================