Device list sort function bug

Quoted 9 lines

Sometimes PowerTOP dies with a Segmentation Fault while generating the report. Little investigation shown that it dies while sorting the device list. The problem is that comparison function devlist_sort is incorrect.

The function should return true if first argument "preceeds" second. But when strcmp() is used, it can return -1, 0 and 1. So both -1 and 1 values are silently converted to true, which is wrong. It confuses the sort() function and it crosses boundary of array.

Jan, could you please test this one?

Thanks in advance,

	-ss