Fixed linux listenserver startup problems

Fixed multiple buffer overruns and memory leaks.

ext/crlib/cr-memory.h

@@ -0,0 +1,52 @@
+//
+// YaPB - Counter-Strike Bot based on PODBot by Markus Klinge.
+// Copyright © 2004-2020 YaPB Project <yapb@jeefo.net>.
+//
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <crlib/cr-basic.h>
+#include <crlib/cr-movable.h>
+#include <crlib/cr-platform.h>
+
+// provide placment new to avoid stdc++ <new> header
+inline void *operator new (const size_t, void *ptr) noexcept {
+   return ptr;
+}
+
+CR_NAMESPACE_BEGIN
+
+// internal memory manager
+class Memory final {
+public:
+   Memory () = default;
+   ~Memory () = default;
+
+public:
+   template <typename T> static T *get (const size_t length = 1) {
+      auto memory = reinterpret_cast <T *> (malloc (cr::max <size_t> (1u, length * sizeof (T))));
+
+      if (!memory) {
+         plat.abort ();
+      }
+      return memory;
+   }
+
+   template <typename T> static void release (T *memory) {
+      free (memory);
+      memory = nullptr;
+   }
+
+public:
+   template <typename T, typename ...Args> static void construct (T *memory, Args &&...args) {
+      new (memory) T (cr::forward <Args> (args)...);
+   }
+
+   template <typename T> static void destruct (T *memory) {
+      memory->~T ();
+   }
+};
+
+CR_NAMESPACE_END