Xiang Xiao 14a3c35917 fs: Ensure fs_dupfd2 always return fd2 in the sucessful path
it's wrong to return file_dup2 directly since file_dup2 never return file handle

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I943537849c75d83b3d646a6a22f035187d9fd521
2021-01-03 00:03:22 +01:00
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