Turn words into an array instead of an std::vector

It never changes its size, so it doesn't need to be a dynamically-sized
vector.

desktop_version/src/Script.h

@@ -49,7 +49,7 @@ public:
 
     //Script contents
     std::vector<std::string> commands;
-    std::vector<std::string> words;
+    std::string words[40];
     std::vector<std::string> txt;
     std::string scriptname;
     int position;