fix solo repldev will be nullptr in map when homestore restart

conanfile.py

@@ -5,7 +5,7 @@
 
 class HomestoreConan(ConanFile):
     name = "homestore"
-    version = "4.5.3"
+    version = "4.5.5"
 
     homepage = "https://github.com/eBay/Homestore"
     description = "HomeStore Storage Engine"

src/lib/replication/service/repl_service_impl.cpp

@@ -52,7 +52,6 @@ ReplicationServiceImpl::create_repl_dev(uuid_t group_id, std::set< std::string,
     superblk< repl_dev_superblk > rd_sb{"repl_dev"};
     rd_sb.create(sizeof(repl_dev_superblk));
     rd_sb->gid = group_id;
-
     shared< ReplDev > repl_dev = create_repl_dev_instance(rd_sb, false /* load_existing */);
     listener->set_repl_dev(repl_dev.get());
     repl_dev->attach_listener(std::move(listener));
@@ -74,7 +73,7 @@ ReplicationServiceImpl::open_repl_dev(uuid_t group_id, std::unique_ptr< ReplDevL
     auto it = m_rd_map.find(group_id);
     if (it != m_rd_map.end()) {
         // We already loaded the ReplDev, just call the group_id and attach the listener
-        auto& repl_dev = it->second;
+        auto repl_dev = it->second;
         listener->set_repl_dev(repl_dev.get());
         repl_dev->attach_listener(std::move(listener));
         return make_async_success< shared< ReplDev > >(std::move(repl_dev));
@@ -133,7 +132,6 @@ void ReplicationServiceImpl::rd_super_blk_found(sisl::byte_view const& buf, void
     rd_sb.load(buf, meta_cookie);
     HS_DBG_ASSERT_EQ(rd_sb->get_magic(), repl_dev_superblk::REPL_DEV_SB_MAGIC, "Invalid rdev metablk, magic mismatch");
     HS_DBG_ASSERT_EQ(rd_sb->get_version(), repl_dev_superblk::REPL_DEV_SB_VERSION, "Invalid version of rdev metablk");
-
     shared< ReplDev > repl_dev = create_repl_dev_instance(rd_sb, true /* load_existing */);
     {
         std::unique_lock lg(m_rd_map_mtx);