Simplify resend abort warning message

Co-authored-by: chrjohn <6644028+chrjohn@users.noreply.github.com>

Author: Copilot

quickfixj-core/src/main/java/quickfix/Session.java

@@ -2404,8 +2404,8 @@ private void resendMessages(Message receivedMessage, int beginSeqNo, int endSeqN
                     getLog().onEvent("Resending message: " + msgSeqNum);
                     boolean sent = send(msg.toString());
                     if (!sent) {
-                        getLog().onWarnEvent("Resend aborted: send() returned false for message " + msgSeqNum);
                         // Abort resend operation immediately - don't send any more messages
+                        getLog().onWarnEvent("Resending messages aborted.");
                         return;
                     }
                     begin = 0;