refactor: implement base x64 fastfile loading for iw4

src/ZoneCommon/Zone/XBlock.cpp

@@ -1,34 +1,23 @@
 #include "XBlock.h"
 
-#include <cassert>
-
-XBlock::XBlock(const std::string& name, const int index, const Type type)
+XBlock::XBlock(std::string name, const unsigned index, const XBlockType type)
+    : m_name(std::move(name)),
+      m_index(index),
+      m_type(type),
+      m_buffer_size(0u)
 {
-    m_name = name;
-    m_index = index;
-    m_type = type;
-    m_buffer = nullptr;
-    m_buffer_size = 0;
-}
-
-XBlock::~XBlock()
-{
-    delete[] m_buffer;
-    m_buffer = nullptr;
 }
 
 void XBlock::Alloc(const size_t blockSize)
 {
-    delete[] m_buffer;
-
     if (blockSize > 0)
     {
-        m_buffer = new uint8_t[blockSize];
+        m_buffer = std::make_unique<uint8_t[]>(blockSize);
         m_buffer_size = blockSize;
     }
     else
     {
-        m_buffer = nullptr;
+        m_buffer.reset();
         m_buffer_size = 0;
     }
 }