main: Add EnsureWorldPakReady

Former-commit-id: 292dfa1eea

include/rstl/pair.hpp

@@ -7,11 +7,13 @@ namespace rstl {
 template < typename L, typename R >
 class pair {
 public:
-  L first;
-  R second;
-
   inline pair() {}
   inline pair(const L& first, const R& second) : first(first), second(second) {}
+  inline pair(const pair& other) : first(other.first), second(other.second) {}
+  inline void operator=(const pair& other) { first = other.first; second = other.second; }
+
+  L first;
+  R second;
 };
 } // namespace rstl