Airodump-ng: Fixed some warnings due to r2455.

git-svn-id: http://svn.aircrack-ng.org/trunk@2457 28c6078b-6c39-48e3-add9-af49d547ecab
osdep: Fixed a couple warnings.

git-svn-id: http://svn.aircrack-ng.org/trunk@2458 28c6078b-6c39-48e3-add9-af49d547ecab
osdep: Fixed some indentation.

git-svn-id: http://svn.aircrack-ng.org/trunk@2459 28c6078b-6c39-48e3-add9-af49d547ecab