default tgui alert input handling (#16241)

* default handling

* do not push that

* fix

* .

* .

code/modules/client/preference_setup/general/03_body.dm

@@ -929,7 +929,7 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 	else if(href_list["marking_color"])
 		var/M = href_list["marking_color"]
 		if (isnull(pref.body_markings[M]["color"]))
-			if (tgui_alert(user, "You currently have customized marking colors. This will reset each bodypart's color. Are you sure you want to continue?","Reset Bodypart Colors",list("Yes","No")) == "No")
+			if (tgui_alert(user, "You currently have customized marking colors. This will reset each bodypart's color. Are you sure you want to continue?","Reset Bodypart Colors",list("Yes","No")) != "Yes")
 				return TOPIC_NOACTION
 		var/mark_color = input(user, "Choose the [M] color: ", "Character Preference", pref.body_markings[M]["color"]) as color|null
 		if(mark_color && CanUseTopic(user))

code/modules/client/preference_setup/vore/02_size.dm

@@ -140,6 +140,8 @@
 			([WEIGHT_MIN]-[WEIGHT_MAX])", "Character Preference", null, WEIGHT_MAX, WEIGHT_MIN, round_value=FALSE)
 		if(new_weight)
 			var/unit_of_measurement = tgui_alert(user, "Is that number in pounds (lb) or kilograms (kg)?", "Confirmation", list("Pounds", "Kilograms"))
+			if(!unit_of_measurement)
+				return TOPIC_NOACTION
 			if(unit_of_measurement == "Pounds")
 				new_weight = round(text2num(new_weight),4)
 			if(unit_of_measurement == "Kilograms")

code/modules/client/preference_setup/vore/07_traits.dm

@@ -569,7 +569,7 @@ var/global/list/valid_bloodreagents = list("default","iron","copper","phoron","s
 			if(trait_choice in nicelist)
 				var/datum/trait/path = nicelist[trait_choice]
 				var/choice = tgui_alert(usr, "\[Cost:[initial(path.cost)]\] [initial(path.desc)]",initial(path.name), list("Take Trait","Go Back"))
-				if(choice != "Go Back")
+				if(choice == "Take Trait")
 					done = TRUE
 
 		if(!trait_choice)