Sprite: Don't allocate sprite encode space for map-mode zoom levels

src/blitter/32bpp_optimized.hpp

@@ -18,7 +18,7 @@ public:
 	/** Data stored about a (single) sprite. */
 	struct SpriteData {
 		BlitterSpriteFlags flags;
-		uint32 offset[ZOOM_LVL_COUNT][2]; ///< Offsets (from .data) to streams for different zoom levels, and the normal and remap image information.
+		uint32 offset[ZOOM_LVL_SPR_COUNT][2]; ///< Offsets (from .data) to streams for different zoom levels, and the normal and remap image information.
 		byte data[];                      ///< Data, all zoomlevels.
 	};