Memory Leak when freeing statement

I have found a memory leak when freeing a statement handle which has had
parameters bound in psqlodbc-08.00.0101.  I was able to eliminate the
leak by adding:

        SC_free_params(self, STMT_FREE_PARAMS_ALL);

to line 330 of statement.c in the SC_Destructor method.  I'm not
familiar enough with the code to know if this is a sensible fix.

-K