mksquashfs: Rewrite write failure error message in writer thread

Write_bytes() already prints an error message if write() fails,
so this error message is largely redundant.

So replace with a more user friendly error message that says
we're aborting due to failure to write the filesystem image.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
1 file changed
tree: 04bd75012b0db01ff0738a1ee534c706ed3e049e
  1. kernel/
  2. kernel-2.4/
  3. squashfs-tools/
  4. README