akabe/swheavy create_heap: Found a slightly cleaner fakematch

include/d/actor/d_a_obj_akabe.h

@@ -29,7 +29,7 @@ namespace daObjAkabe {
         s32 prm_get_arg0() const { return daObj::PrmAbstract(this, PRM_ARG0_W, PRM_ARG0_S); }
     
         s32 _create();
-        BOOL create_heap();
+        u8 create_heap();
         bool _delete();
         void init_scale();
         void init_mtx();

include/d/actor/d_a_obj_swheavy.h

@@ -43,7 +43,7 @@ namespace daObjSwheavy {
         void rev_switch() const { fopAcM_revSwitch(const_cast<Act_c*>(this), prm_get_swSave()); }
     
         static BOOL solidHeapCB(fopAc_ac_c*);
-        BOOL create_heap();
+        u8 create_heap();
         s32 _create();
         bool _delete();
         void set_mtx();