Fix compilation issue for LruCache::operator--

Struct LruCache::Bucket doesn't have a member called m_previous.

Relates-To: NLAM-182

Signed-off-by: Mykola Malik <[email protected]>

Author: mykolamalik

olp-cpp-sdk-core/include/olp/core/utils/LruCache.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 HERE Europe B.V.
+ * Copyright (C) 2019-2025 HERE Europe B.V.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -748,7 +748,7 @@ inline typename LruCache<Key, Value, CacheCostFunc, Compare,
                          Alloc>::const_iterator&
 LruCache<Key, Value, CacheCostFunc, Compare, Alloc>::const_iterator::
 operator--() {
-  this->m_it = this->m_it->second.m_previous;
+  this->m_it = this->m_it->second.previous_;
   return *this;
 }
 
@@ -759,7 +759,7 @@ inline
     LruCache<Key, Value, CacheCostFunc, Compare, Alloc>::const_iterator::
     operator--(int) {
   typename MapType::const_iterator old_value = this->m_it;
-  this->m_it = this->m_it->second.m_previous;
+  this->m_it = this->m_it->second.previous_;
   return const_iterator{old_value};
 }