Fixed clearing lines of display

client/client.ino

@@ -274,10 +274,17 @@ void displayDepartures() {
     }
   }
   for(int i=displayedIndex; i<lines; i++) {
-    M5.Lcd.fillRect(0, i*30, 320, 30, BLACK);
+    clearLine(i);
   }
 }
 
+void clearLine(int y) {
+  displayedLines[y] = "";
+  displayedLastStops[y] = "";
+  displayedDepartureTimes[y] = "";
+  M5.Lcd.fillRect(0, y*30, 320, 30, BLACK);  
+}
+
 
 
 
@@ -355,4 +362,4 @@ void task1(void* pvParameters) {
   while(true) {
     receiveMsg(1);
   }
-}
+}