added .clangd config file. initialized uninitialized variables

Test: tested compilation.

Change-Id: Iccb3ec4dd7ec6a631447c1e3a9e25d287362850f
diff --git a/download_action.cc b/download_action.cc
index 0358569..ab86a7e 100644
--- a/download_action.cc
+++ b/download_action.cc
@@ -106,7 +106,7 @@
     return false;
   }
 
-  ErrorCode error;
+  ErrorCode error{};
   const bool success =
       delta_performer_->Write(
           cached_manifest_bytes.data(), cached_manifest_bytes.size(), &error) &&