Fix redundant comments in fmgr.c

Hi,

I found some possible redundant comments in fmgr.c

1.

fmgr_symbol(Oid functionId, char **mod, char **fn)

{

              HeapTuple          procedureTuple;

              Form_pg_proc procedureStruct;

              bool                     isnull;

              Datum                 prosrcattr;

            Datum                 probinattr;

-             /* Otherwise we need the pg_proc entry */

              procedureTuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(functionId));

I guess the comment here was miscopied from fmgr_info_cxt_security:

2.

              if (!HeapTupleIsValid(procedureTuple))

                          elog(ERROR, "cache lookup failed for function %u", functionId);

            procedureStruct = (Form_pg_proc) GETSTRUCT(procedureTuple);

-             /*

-             */

Best regards,

houzj