Gripper attackby fixes (#13571)

This cannot go wrong, can it?

code/modules/modular_computers/computers/modular_computer/interaction.dm

@@ -204,21 +204,22 @@
 	if(istype(W, /obj/item/card/tech_support))
 		if(!can_reset)
 			to_chat(user, SPAN_WARNING("You cannot reset this type of device."))
-			return
+			return TRUE
 		if(!enabled)
 			to_chat(user, SPAN_WARNING("You cannot reset the device if it isn't powered on."))
-			return
+			return TRUE
 		if(!hard_drive)
 			to_chat(user, SPAN_WARNING("You cannot reset a device that has no hard drive."))
-			return
+			return TRUE
 		enrolled = 0
 		hard_drive.reset_drive()
 		audible_message("[icon2html(src, viewers(get_turf(src)))] <b>[src]</b> pings, <span class='notice'>\"Enrollment status reset! Have a NanoTrasen day.\"</span>")
+		return TRUE
 	if(istype(W, /obj/item/card/id)) // ID Card, try to insert it.
 		var/obj/item/card/id/I = W
 		if(!card_slot)
 			to_chat(user, SPAN_WARNING("You try to insert \the [I] into \the [src], but it does not have an ID card slot installed."))
-			return
+			return TRUE
 
 		user.drop_from_inventory(I, src)
 		if(card_slot.stored_card)
@@ -227,58 +228,61 @@
 		card_slot.insert_id(I)
 		update_uis()
 		to_chat(user, SPAN_NOTICE("You insert \the [I] into \the [src]."))
-		return
+		return TRUE
 	if(is_type_in_list(W, card_slot?.allowed_items))
 		if(!card_slot)
 			to_chat(user, SPAN_WARNING("You try to insert \the [W] into \the [src], but it does not have an ID card slot installed."))
-			return
+			return TRUE
 		if(card_slot.stored_item)
 			to_chat(user, SPAN_WARNING("You try to insert \the [W] into \the [src], but its storage slot is occupied."))
-			return
+			return TRUE
 
 		user.drop_from_inventory(W, src)
 		card_slot.stored_item = W
 		update_uis()
 		verbs += /obj/item/modular_computer/proc/eject_item
 		to_chat(user, SPAN_NOTICE("You insert \the [W] into \the [src]."))
-		return
+		return TRUE
 	if(istype(W, /obj/item/paper))
 		if(!nano_printer)
-			return
+			return TRUE
 		nano_printer.attackby(W, user)
+		return TRUE
 	if(istype(W, /obj/item/aicard))
-		if(!ai_slot)
-			return
-		ai_slot.attackby(W, user)
+		if(ai_slot)
+			ai_slot.attackby(W, user)
+		return TRUE
 	if(istype(W, /obj/item/computer_hardware))
 		var/obj/item/computer_hardware/C = W
 		if(C.hardware_size <= max_hardware_size)
 			try_install_component(user, C)
 		else
 			to_chat(user, SPAN_WARNING("This component is too large for \the [src]."))
+		return TRUE
 	if(istype(W, /obj/item/device/paicard))
 		try_install_component(user, W)
+		return TRUE
 	if(W.iswrench())
 		var/list/components = get_all_components()
 		if(components.len)
 			to_chat(user, SPAN_WARNING("You have to remove all the components from \the [src] before disassembling it."))
-			return
+			return TRUE
 		to_chat(user, SPAN_NOTICE("You begin to disassemble \the [src]."))
 		playsound(get_turf(src), W.usesound, 100, TRUE)
 		if (do_after(user, 20/W.toolspeed))
 			new /obj/item/stack/material/steel(get_turf(src), steel_sheet_cost)
 			user.visible_message(SPAN_NOTICE("\The [user] disassembles \the [src]."), SPAN_NOTICE("You disassemble \the [src]."), SPAN_NOTICE("You hear a ratcheting noise."))
 			qdel(src)
-		return
+		return TRUE
 	if(W.iswelder())
 		var/obj/item/weldingtool/WT = W
 		if(!WT.isOn())
 			to_chat(user, SPAN_WARNING("\The [W] is off."))
-			return
+			return TRUE
 
 		if(!damage)
 			to_chat(user, SPAN_WARNING("\The [src] does not require repairs."))
-			return
+			return TRUE
 
 		to_chat(user, SPAN_NOTICE("You begin repairing the damage to \the [src]..."))
 		playsound(get_turf(src), 'sound/items/welder.ogg', 100, 1)
@@ -286,26 +290,26 @@
 			damage = 0
 			to_chat(user, SPAN_NOTICE("You fully repair \the [src]."))
 		update_icon()
-		return
+		return TRUE
 
 	if(W.isscrewdriver())
 		var/list/all_components = get_all_components()
 		if(!all_components.len)
 			to_chat(user, SPAN_WARNING("This device doesn't have any components installed."))
-			return
+			return TRUE
 
 		var/obj/item/computer_hardware/choice = input(user, "Which component do you want to uninstall?", "Hardware Removal") as null|anything in all_components
 		if(!choice)
-			return
+			return TRUE
 		if(!Adjacent(usr))
-			return
+			return TRUE
 
 		var/obj/item/computer_hardware/H = find_hardware_by_name(initial(choice.name))
 		if(!H)
-			return
+			return TRUE
 		uninstall_component(user, H)
-		return
-	..()
+		return TRUE
+	return ..()
 
 /obj/item/modular_computer/MouseDrop(atom/over_object)
 	var/mob/M = usr
@@ -326,4 +330,4 @@
 		if(!P || (P.program_state == PROGRAM_STATE_KILLED && P.service_state == PROGRAM_STATE_KILLED))
 			return
 		if(P.focused_conv)
-			P.focused_conv.cl_send(P, text, M)
+			P.focused_conv.cl_send(P, text, M)