[MIRROR] default tgui alert input handling (#8891)

Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>
Co-authored-by: Kashargul <KashL@t-online.de>

code/modules/paperwork/adminpaper.dm

@@ -41,6 +41,8 @@
 	var/timehash = copytext(md5("[world.time]"),1,10)
 	var/text = null
 	var/logo = tgui_alert(usr, "Do you want the header of your fax to have a NanoTrasen, SolGov, or Trader logo?","Fax Logo",list("NanoTrasen","SolGov","Trader")) //VOREStation Add - Trader
+	if(!logo)
+		return
 	if(logo == "SolGov")
 		logo = "sglogo.png"
 	//VOREStation Edit/Add

code/modules/paperwork/faxmachine.dm

@@ -283,7 +283,7 @@ Extracted to its own procedure for easier logic handling with paper bundles.
 	var/choice = tgui_alert(usr, "[question_text] improve response time from staff when sending to discord. \
 	Renaming it changes its preview in staff chat.", \
 	"Default name detected", list("Change Title","Continue", "Cancel"))
-	if(choice == "Cancel")
+	if(!choice || choice == "Cancel")
 		return TRUE
 	else if(choice == "Change Title")
 		var/new_name = tgui_input_text(usr, "Enter new fax title", "This will show up in the preview for staff chat on discord when sending \