Btrfs: code cleanups for send/receive
Btrfs: code cleanups for send/receive

Doing some code cleanups as suggested by Arne.
Changes do not change any logic.

Signed-off-by: Alexander Block <66f42ae8113cc8789ea5acab0b0aaf5dd9cd30fc@googlemail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs