fixed when service crashed during/after a detection and no choice was taken

SoniControl/app/src/main/java/at/ac/fhstp/sonicontrol/Location.java

@@ -139,7 +139,12 @@ public class Location {
 
     public double[] getDetectedDBEntry(){
         if(positionLatest[0]==detectedSignalPosition[0]&&positionLatest[1]==detectedSignalPosition[1]){
-            detectedSignalPosition = locationData.getDetectedLocation();
+            if(locationData!=null) {
+                detectedSignalPosition = locationData.getDetectedLocation();
+            }else{
+                detectedSignalPosition[0] = 0;
+                detectedSignalPosition[1] = 0;
+            }
         }
         return detectedSignalPosition;
     }