Bug in postgresql7.1 jdbc2 DatabaseMetaData class

On line 1707 there is a dereference of 'relKind' which may very likely
be set to null. This can cause a null pointer exception. I've include
dthe workaround I am using, though there is almost certainly somethig
better.

Bob Weiler

String relKind;
    switch (r.getBytes(3)[0]) {
    case 'r':
        relKind = "TABLE";
        break;
    case 'i':
        relKind = "INDEX";
        break;
    case 'S':
        relKind = "SEQUENCE";
        break;
    default:
        relKind = null;
    }

    tuple[0] = null;        // Catalog name
    tuple[1] = null;        // Schema name
    tuple[2] = r.getBytes(1);    // Table name
    tuple[3] = relKind != null ? relKind.getBytes() : null;    // Table type
    tuple[4] = remarks;        // Remarks
    v.addElement(tuple);
      }