net: don't assume that we have an SSLHostInfo.

net/socket/ssl_client_socket_pool.cc

Index: net/socket/ssl_client_socket_pool.cc
diff --git a/net/socket/ssl_client_socket_pool.cc b/net/socket/ssl_client_socket_pool.cc
index 12d9e19558067e0a61ccecae1a5aa647df5c1537..b8ffca8b88170f0dc56a3f4a63dfbc18e57912bf 100644
--- a/net/socket/ssl_client_socket_pool.cc
+++ b/net/socket/ssl_client_socket_pool.cc
@@ -202,10 +202,10 @@ int SSLConnectJob::DoTCPConnect() {
                                              params_->ssl_config()));
   }
 
-  if (dnsrr_resolver_)
-    ssl_host_info_->StartDnsLookup(dnsrr_resolver_);
-
   if (ssl_host_info_.get()) {
+    if (dnsrr_resolver_)
+      ssl_host_info_->StartDnsLookup(dnsrr_resolver_);
+
     // This starts fetching the SSL host info from the disk cache for Snap
     // Start.
     ssl_host_info_->Start();