staging: r8188eu: remove tmp variable in update_recvframe_attrib_88e

Remove an unnecessary temporary variable in update_recvframe_attrib_88e.
We can use the prxstat pointer directly to parse the input data. There's
no need to store a local copy in "report".

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220305144117.1380534-2-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>