components: Change auto to not deduce raw pointers.

components/certificate_transparency/log_dns_client.cc

Index: components/certificate_transparency/log_dns_client.cc
diff --git a/components/certificate_transparency/log_dns_client.cc b/components/certificate_transparency/log_dns_client.cc
index 77da9f852a0e5fb38a67050cae5c6cfba90a872c..4b24bafd62f338e9e7316c084c4bf230b301e145 100644
--- a/components/certificate_transparency/log_dns_client.cc
+++ b/components/certificate_transparency/log_dns_client.cc
@@ -39,7 +39,7 @@ bool ParseTxtResponse(const net::DnsResponse& response, std::string* txt) {
   if (parsed_record == nullptr)
     return false;
 
-  auto txt_record = parsed_record->rdata<net::TxtRecordRdata>();
+  auto* txt_record = parsed_record->rdata<net::TxtRecordRdata>();
   if (txt_record == nullptr)
     return false;