Sort the task list by pid, as we're going to use bsearch() (bug 14403)

src/task-manager-bsd.c

@@ -151,6 +151,8 @@ gboolean get_task_list (GArray *task_list)
 	}
 	free(kp);
 
+	g_array_sort (task_list, task_pid_compare_fn);
+
 	return TRUE;
 }