issue in the publish function

.pio\libdeps\nodemcuv2_dev\PubSubClient\src\PubSubClient.cpp: In member function 'boolean PubSubClient::publish_P(const char*, const uint8_t*, unsigned int, boolean)':
.pio\libdeps\nodemcuv2_dev\PubSubClient\src\PubSubClient.cpp:523:16: warning: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Wsign-compare]
  523 |     return (rc == expectedLength);