Fix formatting issue

src/core/ext/filters/client_channel/lb_policy/xds/xds_routing.cc

@@ -264,7 +264,8 @@ bool HeaderMatchHelper(
     const XdsApi::RdsUpdate::RdsRoute::Matchers::HeaderMatcher& header_matcher,
     LoadBalancingPolicy::MetadataInterface* initial_metadata) {
   std::string concatenated_value;
-  auto value = GetMetadataValue(header_matcher.name, initial_metadata, &concatenated_value);
+  auto value = GetMetadataValue(header_matcher.name, initial_metadata,
+                                &concatenated_value);
   if (!value.has_value()) {
     if (header_matcher.type == XdsApi::RdsUpdate::RdsRoute::Matchers::
                                    HeaderMatcher::HeaderMatcherType::PRESENT) {