We would leak all the results for all the scans. At some point in
time the kernel OOM would kick-in and kill the process. Enable
building with -ggdb3 for debug symbols and remmeber the old list
head so we can free it.
==32240== 756 bytes in 3 blocks are definitely lost in loss record 7 of 8
==32240== at 0x40291CC: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==32240== by 0x804BCF5: iw_process_scanning_token (iwlib.c:3059)
==32240== by 0x804BCF5: iw_process_scan (iwlib.c:3255)
==32240== by 0x804BEAF: iw_scan (iwlib.c:3310)
==32240== by 0x8048FD8: scan_wifi (wifi2udp.c:72)
==32240== by 0x8048DB2: main (wifi2udp.c:143)
e1298b0b9d