plug some memory leaks * oct-parse.yy, parse.h (cleanup_statement_list): New function. * toplev.cc (main_loop): Put cleanup_statement_list on the unwind_protect stack to delete the command list created by the parser instead of deleting it directly. * oct-parse.yy (parse_fcn_file, eval_string): Likewise. * input.cc (get_debug_input): Likewise. * pt-loop.cc (tree_simple_for_command::~tree_simple_for_command, tree_complex_for_command::~tree_complex_for_command): Also delete lhs expression. * pt-idx.cc (tree_index_expression::~tree_index_expression): Also delete contents of dyn_field list.

--- a/src/pt-loop.cc	Thu Dec 01 04:04:50 2011 -0500
+++ b/src/pt-loop.cc	Thu Dec 01 04:26:46 2011 -0500
@@ -91,6 +91,7 @@
 
 tree_simple_for_command::~tree_simple_for_command (void)
 {
+  delete lhs;
   delete expr;
   delete maxproc;
   delete list;
@@ -119,6 +120,7 @@
 
 tree_complex_for_command::~tree_complex_for_command (void)
 {
+  delete lhs;
   delete expr;
   delete list;
   delete lead_comm;