Codechange: Replace AllocatorProc with SpriteAllocator class.

This allows for state to be passed to or maintained by the allocator.

src/blitter/32bpp_sse2.cpp

@@ -20,7 +20,7 @@
 /** Instantiation of the SSE2 32bpp blitter factory. */
 static FBlitter_32bppSSE2 iFBlitter_32bppSSE2;
 
-Sprite *Blitter_32bppSSE_Base::Encode(const SpriteLoader::SpriteCollection &sprite, AllocatorProc *allocator)
+Sprite *Blitter_32bppSSE_Base::Encode(const SpriteLoader::SpriteCollection &sprite, SpriteAllocator &allocator)
 {
 	/* First uint32_t of a line = the number of transparent pixels from the left.
 	 * Second uint32_t of a line = the number of transparent pixels from the right.
@@ -51,7 +51,7 @@ Sprite *Blitter_32bppSSE_Base::Encode(const SpriteLoader::SpriteCollection &spri
 		all_sprites_size += rgba_size + mv_size;
 	}
 
-	Sprite *dst_sprite = (Sprite *) allocator(sizeof(Sprite) + sizeof(SpriteData) + all_sprites_size);
+	Sprite *dst_sprite = allocator.Allocate<Sprite>(sizeof(Sprite) + sizeof(SpriteData) + all_sprites_size);
 	dst_sprite->height = sprite[ZOOM_LVL_MIN].height;
 	dst_sprite->width  = sprite[ZOOM_LVL_MIN].width;
 	dst_sprite->x_offs = sprite[ZOOM_LVL_MIN].x_offs;