test suite: remove ‘exit;’ causes octave 4.2.0 rc2 to terminate with uncaught...

test suite: remove ‘exit;’ causes octave 4.2.0 rc2 to terminate with uncaught exception of type octave::exit_exception

tests/run_o_script.m

-## Copyright (C) 2015 Dynare Team
+## Copyright (C) 2015-2016 Dynare Team
 ##
 ## This file is part of Dynare.
 ##
@@ -44,8 +44,6 @@ else
   fprintf(fid,':list-of-passed-tests: %s\n', [name '.m']);
 end
 fclose(fid);
-exit;
-
 
 ## Local variables:
 ## mode: Octave