Move tempword and currentletter off of scriptclass

There's no reason for these temporary variables to be a permanent part
of the class itself.

desktop_version/src/Script.cpp

@@ -37,7 +37,8 @@ void scriptclass::clearcustom(){
 void scriptclass::tokenize( std::string t )
 {
 	j = 0;
-	tempword = "";
+	std::string tempword;
+	std::string currentletter;
 
 	for (size_t i = 0; i < t.length(); i++)
 	{

desktop_version/src/Script.h

@@ -57,8 +57,6 @@ public:
 
     int scriptdelay;
     bool running, dontrunnextframe;
-    std::string tempword;
-    std::string currentletter;
 
     //Textbox stuff
     int textx;