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));