Added logfile close after protected_run finish

Author: Nathan Lee

pyrunner/version.py

@@ -1 +1 @@
-__version__ = '4.2.4'
+__version__ = '4.2.5'

pyrunner/worker/abstract.py

@@ -103,6 +103,8 @@ def protected_run(self):
       self.logger.error(traceback.format_exc())
       self.retcode = 904
 
+    if sys.stdout: sys.stdout.close()
+    if sys.stderr: sys.stderr.close()
     self.logger.close()
 
     return