OpenDream Cleanup Pass (#67036)

OpenDream can detect BYONDisms that BYOND or SpacemanDMM miss. This PR fixes all of the issues it found in TG. Each change is explained in code comments below.

code/datums/components/construction.dm

@@ -91,8 +91,9 @@
 				. = user.transferItemToLoc(I, parent)
 
 			// Using stacks
-			else if(istype(I, /obj/item/stack))
-				. = I.use_tool(parent, user, 0, volume=50, amount=current_step["amount"])
+			else
+				if(istype(I, /obj/item/stack))
+					. = I.use_tool(parent, user, 0, volume=50, amount=current_step["amount"])
 
 
 	// Going backwards? Undo the last action. Drop/respawn the items used in last action, if any.
@@ -108,8 +109,9 @@
 				if(located_item)
 					located_item.forceMove(drop_location())
 
-			else if(ispath(target_step_key, /obj/item/stack))
-				new target_step_key(drop_location(), target_step["amount"])
+			else
+				if(ispath(target_step_key, /obj/item/stack))
+					new target_step_key(drop_location(), target_step["amount"])
 
 /datum/component/construction/proc/spawn_result()
 	// Some constructions result in new components being added.

code/datums/components/squeak.dm

@@ -130,11 +130,11 @@
 		holder = null
 
 // Disposal pipes related shits
-/datum/component/squeak/proc/disposing_react(datum/source, obj/structure/disposalholder/holder, obj/machinery/disposal/source)
+/datum/component/squeak/proc/disposing_react(datum/source, obj/structure/disposalholder/disposal_holder, obj/machinery/disposal/disposal_source)
 	SIGNAL_HANDLER
 
 	//We don't need to worry about unregistering this signal as it will happen for us automaticaly when the holder is qdeleted
-	RegisterSignal(holder, COMSIG_ATOM_DIR_CHANGE, .proc/holder_dir_change)
+	RegisterSignal(disposal_holder, COMSIG_ATOM_DIR_CHANGE, .proc/holder_dir_change)
 
 /datum/component/squeak/proc/holder_dir_change(datum/source, old_dir, new_dir)
 	SIGNAL_HANDLER