Some Robot Fixes (#20049)

Fixed robots duplication on insertion of posibrain without a player.
Fixed runtime that caused the above.
Fixed runtime on cyborg building inspection.
Fixed runtime on cyborg building due to uninitalized list vars.

Fixes #20040

code/modules/mob/living/silicon/robot/items/robot_parts.dm

@@ -31,7 +31,7 @@
 /obj/item/robot_parts/get_examine_text(mob/user, distance, is_adjacent, infix, suffix)
 	. = ..()
 	if(is_adjacent)
-		. = report_missing_parts(user)
+		. += report_missing_parts(user)
 
 /obj/item/robot_parts/proc/report_missing_parts(var/mob/user)
 	. = list()
@@ -259,7 +259,7 @@
 				C.replace_cell(chest.cell)
 				//so people won't mess around with the chassis until it is deleted
 				forceMove(new_shell)
-				M.brainmob.mind.transfer_to(new_shell)
+				M.brainmob.mind?.transfer_to(new_shell)
 				qdel(M)
 				new_shell.add_language(LANGUAGE_EAL)
 				var/newname = sanitizeSafe( tgui_input_text(new_shell, "Enter a name, or leave blank for the default name.", "Name change", "", MAX_NAME_LEN), MAX_NAME_LEN )
@@ -289,7 +289,7 @@
 				O.custom_name = created_name
 				O.updatename("Default")
 
-				M.brainmob.mind.transfer_to(O)
+				M.brainmob.mind?.transfer_to(O)
 
 				O.job = "Cyborg"
 				O.cell = chest.cell

code/modules/mob/living/silicon/robot/robot.dm

@@ -132,9 +132,9 @@
 	// Overlays
 	var/has_cut_eye_overlay
 	var/image/eye_overlay
-	var/list/image/cached_eye_overlays
+	var/list/image/cached_eye_overlays = list()
 	var/image/panel_overlay
-	var/list/image/cached_panel_overlays
+	var/list/image/cached_panel_overlays = list()
 	var/image/shield_overlay
 	var/datum/weakref/holo_map
 
@@ -400,6 +400,9 @@
 /mob/living/silicon/robot/verb/Namepick()
 	set category = "Robot Commands"
 
+	if(!src.mind)
+		return
+
 	spawn(0)
 		var/newname
 		newname = sanitizeSafe(input(src, "You are a robot. Enter a name, or leave blank for the default name.", "Name change") as text, MAX_NAME_LEN)