ENH:Reduce the number of page faults in AMS

Change-Id: I4bfb048ec62c35b515eecbb70c175fa0975d7f92
(cherry picked from commit 791be195475bd834c937fb63341713529e4f41b8)

src/slic3r/GUI/Widgets/TempInput.hpp

@@ -77,6 +77,7 @@ public:
     wxPopupTransientWindow *wdialog{nullptr};
     int  temp_type;
     bool actice = false;
+    wxString                currentTemp;
 
 
     wxString erasePending(wxString &str);