Reduce the chance of tainting

diff --git a/TomTom.lua b/TomTom.lua
index f5fdc16..0c9dc01 100755
--- a/TomTom.lua
+++ b/TomTom.lua
@@ -474,6 +474,7 @@ end
 -------------------------------------------------------------------]]--

 StaticPopupDialogs["TOMTOM_REMOVE_ALL_CONFIRM"] = {
+	preferredIndex = 3,
     text = L["Are you sure you would like to remove ALL TomTom waypoints?"],
     button1 = L["Yes"],
     button2 = L["No"],