message: Make lldb-test compile on stable.
diff: @@ -497,6 +497,7 @@ Error opts::symbols::findNamespaces(lldb_private::Module &Module) {
  Error opts::symbols::findTypes(lldb_private::Module &Module) {
  SymbolVendor &Vendor = *Module.GetSymbolVendor();
  + auto &Symfile = Vendor;
  Expected<CompilerDeclContext> ContextOr = getDeclContext(Vendor);
  if (!ContextOr)
  return ContextOr.takeError();
  