fix type size

src/hack/patterns/ring_buffer.hpp

@@ -85,7 +85,7 @@ namespace hack::patterns
         return m_data;
       }
 
-      void skip(int n) 
+      void skip(std::size_t n) 
       {
         m_tail += n;
         while (m_tail >= m_size) m_tail -= m_size;
@@ -137,7 +137,7 @@ namespace hack::patterns
     private:
       std::size_t m_head{ 0 };
       std::size_t m_tail{ 0 };
-      int m_size;
+      std::size_t m_size;
       bool m_full{ false };
 
     private: