Fix auto raw pointer deduction on linux

components/update_client/update_response.cc

Index: components/update_client/update_response.cc
diff --git a/components/update_client/update_response.cc b/components/update_client/update_response.cc
index 41670d317de9ff25162350fc280a42caa360b4f3..ef1aa2af693f709b44b97337f0fdbabfabb9c551 100644
--- a/components/update_client/update_response.cc
+++ b/components/update_client/update_response.cc
@@ -291,7 +291,7 @@ bool ParseAppTag(xmlNode* app,
   static const char* attrs[] = {UpdateResponse::Result::kCohort,
                                 UpdateResponse::Result::kCohortHint,
                                 UpdateResponse::Result::kCohortName};
-  for (const auto& attr : attrs) {
+  for (auto* attr : attrs) {
     auto value = GetAttributePtr(app, attr);
     if (value)
       result->cohort_attrs.insert({attr, *value});