also copy the invalid handlers pointer (see last commit) on CacheData copy constructor

offloading-cacher/cache.hpp

@@ -678,6 +678,7 @@ inline dsacache::CacheData::CacheData(const dsacache::CacheData& other) {
 
     incomplete_cache_ = other.incomplete_cache_;
     handlers_ = other.handlers_;
+    invalid_handlers_ = other.invalid_handlers_;
 }
 
 inline dsacache::CacheData::~CacheData() {