fixed calculation of totalPrio

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

core/src/main/java/de/srsoftware/umbrella/core/model/Task.java

@@ -246,11 +246,13 @@ public class Task implements Mappable {
 
 	private int totalPrio() {
 		if (status >= Status.COMPLETE.code()) return 0; // task is done, do no longer highlight
-		if (dueDate == null) return priority;
-		var diff = (int) (dueDate.toEpochDay()-LocalDate.now().toEpochDay());
-		if (diff <= 0) return priority + 100; // due date has passed
-		if (diff < 100) return priority + 100 - diff; // due within the next 100 days
-		return Math.min(100,priority);
+		int total = priority;
+		if (dueDate != null) {
+			var diff = (int) (dueDate.toEpochDay()-LocalDate.now().toEpochDay());
+			if (diff <= 0) total += 100; // due date has passed
+			if (diff < 100) total += 100 - diff; // due within the next 100 days
+		}
+		return Math.min(100,total);
 	}