staging: r8188eu: don't initialize drvinfo_sz to 0

In update_recvframe_attrib_88e, there's an initial memset which sets
all of pattrib to 0. There's no need to set pattrib->drvinfo_sz = 0
again later.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220305144117.1380534-4-martin@kaiser.cx


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