dont need to extra check for this actually

src/p_mobj.c

@@ -6482,7 +6482,7 @@ void P_MobjThinker(mobj_t *mobj)
 					return;
 				}
 				
-				if (mobj->state == &states[S_SHADOW] && (cv_sloperoll.value == 2 && cv_spriteroll.value)) 
+				if (mobj->state == &states[S_SHADOW] && cv_sloperoll.value == 2)
 				{
 					mobj->slopepitch = mobj->target->slopepitch;
 					mobj->sloperoll = mobj->target->sloperoll;