erofs-utils: avoid unnecessary insert behavior when not deduplicating

We should do nothing in dedupe inserting when it's not configured.

Signed-off-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221013040011.31944-1-zbestahu@gmail.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
1 file changed