ICollisionFilter: Add virtual destructor

Prevents any potential undefined behavior from occurring through
polymorphic use.

Runtime/Collision/ICollisionFilter.hpp

@@ -11,6 +11,7 @@ protected:
   explicit ICollisionFilter(CActor& actor) : x4_actor(actor) {}
 
 public:
+  virtual ~ICollisionFilter() = default;
   virtual void Filter(const CCollisionInfoList& in, CCollisionInfoList& out) const = 0;
 };