Add virtual destructor (see #65)

Author: maxbachmann

VERSION

@@ -1 +1 @@
-0.13.3
+0.13.4

src/py_abstraction.cpp

@@ -157,6 +157,9 @@ static inline PyObject* fuzz_call(bool processor_default, PyObject* args, PyObje
   }
 
 struct CachedFuzz {
+  /* deleting polymorphic object without virtual destructur results in undefined behaviour */
+  virtual ~CachedFuzz() = default;
+
   virtual void str1_set(python_string str)
   {
     m_str1 = std::move(str);

src/rapidfuzz/__init__.py

@@ -3,6 +3,6 @@
 """
 __author__ = "Max Bachmann"
 __license__ = "MIT"
-__version__ = "0.13.3"
+__version__ = "0.13.4"
 
 from rapidfuzz import process, fuzz, utils, levenshtein