Fix lambda capture for both osx and windows

Signed-off-by: Emerson Knapp <emerson.b.knapp@gmail.com>

Author: emersonknapp

rosbag2_transport/test/rosbag2_transport/test_record.cpp

@@ -160,7 +160,9 @@ TEST_F(RecordIntegrationTestFixture, receives_latched_messages)
   // Takes ~100ms in local testing, 5s chosen as a very long timeout
   bool succeeded = rosbag2_test_common::spin_and_wait_for(
     std::chrono::seconds(5), publisher_node,
-    [&writer]() {
+    // The = is necessary due to an implementation difference between clang and windows
+    // Clang claims capture is unecessary (and we use -Werror), but windows needs it
+    [&writer, num_latched_messages=num_latched_messages]() {
       return writer.get_messages().size() == num_latched_messages;
     });
   stop_recording();