SimulatorEngine: Fix ressource leak (log)

prism/src/simulator/SimulatorEngine.java

@@ -1338,7 +1338,8 @@ public class SimulatorEngine extends PrismComponent
 	 */
 	public void exportPath(File file, boolean timeCumul, String colSep, ArrayList<Integer> vars) throws PrismException
 	{
-		PrismLog log;
+		PrismLog log = null;
+		try {
 			if (path == null)
 				throw new PrismException("There is no path to export");
 			// create new file log or use main log
@@ -1355,6 +1356,10 @@ public class SimulatorEngine extends PrismComponent
 			((PathFull) path).exportToLog(log, timeCumul, colSep, vars);
 			if (file != null)
 				log.close();
+		} finally {
+			if (file != null && log != null)
+				log.close();
+		}
 	}
 
 	/**