Use precompiled headers, fix weak data issues

src/d/actor/d_a_obj_ladder.cpp

@@ -3,14 +3,13 @@
  * Object - Drop-down ladder
  */
 
+#include "d/dolzel.h" // IWYU pragma: keep
 #include "d/actor/d_a_obj_ladder.h"
 #include "d/res/res_mhsg.h"
 #include "d/d_com_inf_game.h"
 #include "d/d_procname.h"
 #include "d/d_priority.h"
 
-#include "weak_data_1811.h" // IWYU pragma: keep
-
 Mtx daObjLadder::Act_c::M_tmp_mtx;
 
 namespace daObjLadder {