fix fleet code style

test=develop

paddle/fluid/framework/fleet/fleet_wrapper.cc

@@ -121,13 +121,11 @@ void FleetWrapper::GatherServers(const std::vector<uint64_t>& host_sign_list,
 #endif
 }
 
-void FleetWrapper::GatherClients(
-    const std::vector<uint64_t>& host_sign_list) {
+void FleetWrapper::GatherClients(const std::vector<uint64_t>& host_sign_list) {
 #ifdef PADDLE_WITH_PSLIB
   VLOG(3) << "Going to gather client ips";
   size_t len = host_sign_list.size();
-  pslib_ptr_->gather_clients(const_cast<uint64_t*>(host_sign_list.data()),
-                             len);
+  pslib_ptr_->gather_clients(const_cast<uint64_t*>(host_sign_list.data()), len);
 #endif
 }