Comment 2 for bug 1758542

StacktraceTop:
 ped_assert (cond_text=cond_text@entry=0x7fe909814d1a "num > 0", file=file@entry=0x7fe909814e18 "../../../libparted/labels/mac.c", line=line@entry=975, function=function@entry=0x7fe909815250 <__PRETTY_FUNCTION__.5253> "_generate_raw_freespace_part") at ../../libparted/debug.c:111
 _generate_raw_freespace_part (geom=0x7fe8fc06b6d8, geom=0x7fe8fc06b6d8, part_map=0x7fe8fc043000, num=0, disk=0x7fe8f006bba0) at ../../../libparted/labels/mac.c:975
 mac_write (disk=0x7fe8f006bba0) at ../../../libparted/labels/mac.c:1102
 ped_disk_commit_to_dev (disk=disk@entry=0x7fe8f006bba0) at ../../libparted/disk.c:501
 disk_commit (disk=disk@entry=0x7fe8f006bba0, path=path@entry=0x7fe8fc096f70 "/dev/sdc", error=error@entry=0x7fe90b3d7580) at part.c:253