Fix disabling of CTL model checking (for dev release).

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@911 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/prism/NondetModelChecker.java

@@ -41,7 +41,7 @@ import jltl2dstar.*;
 /*
  * Model checker for MDPs
  */
-public class NondetModelChecker extends StateModelChecker
+public class NondetModelChecker extends NonProbModelChecker
 {
 	// Model (MDP)
 	protected NondetModel model;