smb311: correct incorrect offset field in compression header

The offset field in the compression header is 32 bits not 16.
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Reported-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/smb/common/smb2pdu.h

@@ -227,7 +227,7 @@ struct smb2_compression_hdr {
 	__le32 OriginalCompressedSegmentSize;
 	__le16 CompressionAlgorithm;
 	__le16 Flags;
-	__le16 Offset; /* this is the size of the uncompressed SMB2 header below */
+	__le32 Offset; /* this is the size of the uncompressed SMB2 header below */
 	/* uncompressed SMB2 header (READ or WRITE) goes here */
 	/* compressed data goes here */
 } __packed;