message: Fix signed/unsigned comparison warnings
diff: @@ -349,8 +349,8 @@ namespace micropather
  const Item* Find(void* start, void* end);
  Item* mem = nullptr;
  - int allocated = 0;
  - int nItems = 0;
  + unsigned allocated = 0;
  + unsigned nItems = 0;
  };
  struct CacheData
  