Annotated Striper.cc and PrimaryLogPG.cc

Annotated Striper.cc and PrimaryLogPG.cc

1. src/osd/PrimaryLogPG.cc:

It's safe to use  clear() on operand that has been moved.
reference: https://github.com/ceph/ceph/pull/48839/files

2. src/osdc/Striper.cc:

This is a false-positive because in the loop the bufferlist is only being moved when the size of the buffer_extents is equal to 1 otherwise it will not move
reference: https://github.com/ceph/ceph/blob/e879ce83c084f1a96e5dd0ab2b57bf909cfa423d/src/osdc/Striper.cc#L411-L415

Signed-off-by: Suyash Dongre <suyashd999@gmail.com>