Modified hasPendingWork to return bool

examples/simple_repeater/main.cpp

@@ -127,7 +127,7 @@ void loop() {
 
   if (the_mesh.getNodePrefs()->powersaving_enabled &&                     // To check if power saving is enabled
       the_mesh.millisHasNowPassed(lastActive + nextSleepinSecs * 1000)) { // To check if it is time to sleep
-    if (the_mesh.hasPendingWork() == 0) { // No pending work. Safe to sleep
+    if (!the_mesh.hasPendingWork()) { // No pending work. Safe to sleep
       board.sleep(1800);             // To sleep. Wake up after 30 minutes or when receiving a LoRa packet
       lastActive = millis();
       nextSleepinSecs = 5;  // Default: To work for 5s and sleep again