net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null

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CVE-2022-50073: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: net: tap: NULL pointer derefence in devparseheaderprotocol when skb-dev is null Fixes a NULL pointer derefence bug triggered from tap driver. When tapgetuser calls virtionethdrtoskb the skb-dev is null in tap.c skb-dev is set aft...