GRAPHICS: Fix BMP getPalette function definition.

The BMP decoder getPalette function definition is now identical to
the other image format decoders subclassed from ImageDecoder.
This also fixes a overloaded virtual warning reported by salty-horse.

1 files changed, 1 insertions, 1 deletions

diff --git a/graphics/decoders/bmp.h b/graphics/decoders/bmp.h
index 6360aa81c9..8a37538ee1 100644
--- a/graphics/decoders/bmp.h
+++ b/graphics/decoders/bmp.h
@@ -51,7 +51,7 @@ public:
 	void destroy();
 	virtual bool loadStream(Common::SeekableReadStream &stream);
 	virtual const Surface *getSurface() const { return _surface; }
-	virtual const byte *getPalette() { return _palette; }
+	const byte *getPalette() const { return _palette; }
 
 private:
 	Surface *_surface;