chooseField still works after returning null

src/main/java/de/tims/fleetstorm/ai/Logic.java

@@ -35,7 +35,7 @@ public class Logic {
 			if (!clearedAbove) {
 				target = matchfield.getAbove(target);
 				out = target;
-				if (target.getState() == Coordinate.EMPTY) {
+				if (target.getState() == Coordinate.EMPTY || target == null) {
 					clearedAbove = true;
 					target = lastShot;
 				}
@@ -45,7 +45,7 @@ public class Logic {
 			if (!clearedBelow) {
 				target = matchfield.getBelow(target);
 				out = target;
-				if (target.getState() == Coordinate.EMPTY) {
+				if (target.getState() == Coordinate.EMPTY || target == null) {
 					clearedBelow = true;
 					target = lastShot;
 				}
@@ -57,7 +57,7 @@ public class Logic {
 			if (!clearedRight) {
 				target = matchfield.getRight(target);
 				out = target;
-				if (target.getState() == Coordinate.EMPTY) {
+				if (target.getState() == Coordinate.EMPTY || target == null) {
 					clearedRight = true;
 					target = lastShot;
 				}
@@ -67,7 +67,7 @@ public class Logic {
 			if (!clearedLeft) {
 				target = matchfield.getLeft(target);
 				out = target;
-				if (target.getState() == Coordinate.EMPTY) {
+				if (target.getState() == Coordinate.EMPTY || target == null) {
 					clearedLeft = true;
 					target = lastShot;
 				}