luci-mod-admin-full: admin: change password in Map.parse()

Move the password setting into the .parse() callback to ensure that it is
updated regardless of whether "Save" or "Save & Apply" has been pressed.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

modules/luci-mod-admin-full/luasrc/model/cbi/admin_system/admin.lua

@@ -21,7 +21,7 @@ function s.cfgsections()
 	return { "_pass" }
 end
 
-function m.on_commit(map)
+function m.parse(map)
 	local v1 = pw1:formvalue("_pass")
 	local v2 = pw2:formvalue("_pass")
 
@@ -36,6 +36,8 @@ function m.on_commit(map)
 			m.message = translate("Given password confirmation did not match, password not changed!")
 		end
 	end
+
+	Map.parse(map)
 end