[master] fixed division by zero in corner cases

ide/org.omnetpp.sequencechart/src/org/omnetpp/sequencechart/widgets/SequenceChart.java

@@ -2882,7 +2882,13 @@ public class SequenceChart
 		if (low == 0 && high == 0) {
 			return 0; //Legacy, if no complexities are stored
 		}
-		if (debug2) Debug.println("complexity: " + complexity + " low: "+low+ " high: "+high);
+		
+		if (debug2)
+			Debug.println("complexity: " + complexity + " low: "+low+ " high: "+high);
+		
+		if (high == low)
+			return 1;
+		
 		return ((complexity - low)*1.0) / (high - low);
 	}
 	
@@ -2892,6 +2898,10 @@ public class SequenceChart
 		if (low.doubleValue() == 0 && high.doubleValue() == 0) {
 			return 0; //Legacy, if no durations are stored
 		}
+		
+		if (high.equals(low))
+			return 1;
+		
 		return ((duration.doubleValue() - low.doubleValue())*1.0) / (high.doubleValue() - low.doubleValue());
 	}