[PATCH 0/2] xfsdump: fix problems in cb_add_inogrp

[rjohnston at sgi.com]

The memset in cb_add_inogrp will segfault when the index oldsize
overflows. In cb_add_inogrp(), the temp variables used in
calculating the new i2gmap segment offset should be int64 instead
of intgen_t (int32).

A second bug also occurs because we already compensate for the
length of each item in oldsize so are 32bit wrap becomes a 40bit
wrap.