Hi,

with 0.9.16 a "iw wlan0 station dump" gives the following output:

Station XX:XX:XX:XX:XX:XX (on wlan0)
	inactive time:	4 ms
	rx bytes:	-1611945626
	rx packets:	7643414
	tx bytes:	1527923993
	tx packets:	4829428
	signal:  	-63 dBm
	tx bitrate:	54.0 MBit/s


Seems to be the output qualifier %d is used wrongly in some cases.
This patch fixes that.