i2cdump double the word count if using -w

[cdannebe]

Hi
i2cdump doubles the count of words if I use a range with option -w.

The reason is line 471 in version 4.2-2:
for (j = 0; j < 8; j++) {
 /* Skip unwanted registers */

if you read word wise, you should count word wise.

for (j = 0; j < 8; j+=2) {
 /* Skip unwanted registers */

Regards and many thanks for your work, Christian.