Possible bug in plpgsql/src/gram.y

In this bit of code in src/pl/plpgsql/src/gram.y in the current CVS
sources, curname_def is defined as PLpgSQL_expr * but it is is
allocated the space required for a PLpgSQL_var.  This looks like a
bug.

Ian

				| decl_varname K_CURSOR decl_cursor_args decl_is_from K_SELECT decl_cursor_query
					{
						PLpgSQL_var *new;
						PLpgSQL_expr *curname_def;
						char		buf[1024];
						char		*cp1;
						char		*cp2;

						plpgsql_ns_pop();

						new = malloc(sizeof(PLpgSQL_var));
						memset(new, 0, sizeof(PLpgSQL_var));

						curname_def = malloc(sizeof(PLpgSQL_var));
						memset(curname_def, 0, sizeof(PLpgSQL_var));