fix bapping rd console with disks (ParadiseSS13#29447)

Author: warriorstar-orion

code/modules/research/rdconsole.dm

@@ -182,17 +182,18 @@ won't update every console in existence) but it's more of a hassle to do. Also,
 /obj/machinery/computer/rdconsole/item_interaction(mob/living/user, obj/item/used, list/modifiers)
 	//Loading a disk into it.
 	if(istype(used, /obj/item/disk))
+		. = ITEM_INTERACT_COMPLETE
 		if(t_disk || d_disk)
 			to_chat(user, "A disk is already loaded into the machine.")
-			return ITEM_INTERACT_COMPLETE
+			return
 
 		if(istype(used, /obj/item/disk/tech_disk)) t_disk = used
 		else if(istype(used, /obj/item/disk/design_disk)) d_disk = used
 		else
 			to_chat(user, "<span class='danger'>Machine cannot accept disks in that format.</span>")
-			return ITEM_INTERACT_COMPLETE
+			return
 		if(!user.drop_item())
-			return ITEM_INTERACT_COMPLETE
+			return
 		used.loc = src
 		to_chat(user, "<span class='notice'>You add the disk to the machine!</span>")
 	else if(!(linked_analyzer && linked_analyzer.busy) && !(linked_lathe && linked_lathe.busy) && !(linked_imprinter && linked_imprinter.busy))