aatree is used both with HWRENDER and ROTSPRITE, so just don't guard its include

src/w_wad.h

@@ -107,9 +107,7 @@ virtlump_t* vres_Find(const virtres_t*, const char*);
 
 #define lumpcache_t void *
 
-#ifdef HWRENDER
 #include "m_aatree.h"
-#endif
 
 // Resource type of the WAD. Yeah, I know this sounds dumb, but I'll leave it like this until I clean up the code further.
 typedef enum restype