NBA: Fix HOA output (--END-- marker was emitted per state)

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@11104 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/jltl2dstar/NBA.java

@@ -303,8 +303,8 @@ public class NBA implements Iterable<NBA_State> {
 					out.println(to);
 				}
 			}
-			out.println("--END--");
 		}
+		out.println("--END--");
 	}
 
 	// public void print_dot(std::ostream& out);