Fix: Use double primitive

CityDoctorParent/CityDoctorModel/src/main/java/de/hft/stuttgart/citydoctor2/database/DatabaseHandler.java

@@ -138,12 +138,12 @@ public class DatabaseHandler {
         return cos;
     }
 
-    public static List<CityObject> getBufferIntersectingObjects(CityObject co, Double buffersize) {
+    public static List<CityObject> getBufferIntersectingObjects(CityObject co, double bufferSize) {
         List<CityObject> intersectingObjects = new ArrayList<>();
         try (Connection con = new ConnectionWrapper(H2GISDBFactory.openSpatialDataBase(DB_NAME))) {
             try (PreparedStatement ps = con.prepareStatement("SELECT gmlid, bbox, data, type FROM features AS tab1" +
                     " WHERE ST_INTERSECTS(ST_BUFFER(tab1.geom,?), (SELECT GEOM FROM features WHERE gmlid = ?)) AND tab1.gmlid <> ?")) {
-                ps.setDouble(1, buffersize);
+                ps.setDouble(1, bufferSize);
                 ps.setString(2, co.getGmlId().toString());
                 ps.setString(3, co.getGmlId().toString());
                 ResultSet rs = ps.executeQuery();