If the path to the file being bmap'd has a [0-9] in it,
the output filter matches it and we get golden output
failure. Be more specific on the match.
Merge of master-melb:xfs-cmds:31170a by kenmcd.
Be more specific when trying to match extent output lines.
_filter_blocks()
{
$AWK_PROG '
-/[0-9]/ {
+/^ +[0-9]/ {
if (!written_size) {
written_size = $6
unwritten1 = ((1048576/512) / 2) - written_size