Add virtual destructor to the CriticalLibrary

src/Battling/Library/CriticalLibrary.hpp

@@ -6,6 +6,7 @@
 namespace CreatureLib::Battling {
     class CriticalLibrary {
     public:
+        virtual ~CriticalLibrary() = default;
         virtual bool IsCritical(ExecutingAttack* attack, Creature* target, uint8_t hit) const;
     };
 }