Removing extra string creation for log

Removin unneccessary string from being created in logging

Test: m libsnapshot
Change-Id: I123b6a10f349dfb0c275e630b5f02d1cec8c2687

fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp

diff --git a/fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp b/fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp
index 6d04c6a..1dd6373 100644
--- a/fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp
+++ b/fs_mgr/libsnapshot/libsnapshot_cow/writer_v2.cpp
@@ -174,8 +174,7 @@
         current_data_pos_ = next_data_pos_;
     }
 
-    std::string batch_write = batch_write_ ? "enabled" : "disabled";
-    LOG_INFO << "Batch writes: " << batch_write;
+    LOG_INFO << "Batch writes: " << batch_write_ ? "enabled" : "disabled";
 }
 
 void CowWriterV2::InitWorkers() {