Test: Fix NPE in testcase

CityDoctorParent/CityDoctorEdge/src/test/java/de/hft/stuttgart/citydoctor2/edge/IntersectionErrorsTest.java

@@ -41,7 +41,7 @@ public class IntersectionErrorsTest {
 		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1, Orientation.OUTWARD);
 
 		ConcretePolygon p1 = new ConcretePolygon();
-
+		geom.addPolygon(p1);
 		LinearRing ext1 = new LinearRing(LinearRingType.EXTERIOR);
 		p1.setExteriorRing(ext1);
 		
@@ -66,6 +66,7 @@ public class IntersectionErrorsTest {
 		ext1.addVertex(v1);
 
 		ConcretePolygon p2 = new ConcretePolygon();
+		geom.addPolygon(p2);
 		LinearRing ext2 = new LinearRing(LinearRingType.EXTERIOR);
 		p2.setExteriorRing(ext2);
 
@@ -88,8 +89,8 @@ public class IntersectionErrorsTest {
 		ext2.addVertex(v8);
 		ext2.addVertex(v5);
 
-		geom.addPolygon(p1);
-		geom.addPolygon(p2);
+
+
 
 		geom.prepareForChecking();