[PATCH 2/2] xfsdump: don't do pointer math twice

[rjohnston@xxxxxxx]

The pointer math when calculating the address for the call to memset
is incorrect, so we are clearing the wrong memory location.

i2gmap is of type i2gseg_t 

oldsize has already computed the pointer offset
        oldsize = inomap.hnkmaplen * SEGPERHNK * sizeof(i2gseg_t);
the memset call is using
        inomap.i2gmap + oldsize == &inomap.i2gmap[oldsize]
so we were doing the pointer math twice.

We already compensate for the length of each item in oldsize so
adding need to add a (char *) cast to the memset parameter.

---
 dump/inomap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/dump/inomap.c
===================================================================
--- a/dump/inomap.c
+++ b/dump/inomap.c
@@ -1143,7 +1143,7 @@ cb_add_inogrp( void *arg1, intgen_t fsfd
                                return -1;
 
                        /* zero the new portion of the i2gmap */
-                       memset(inomap.i2gmap + oldsize,
+                       memset((char *)inomap.i2gmap + oldsize,
                               0,
                               SEGPERHNK * sizeof(i2gseg_t));
                }