Fix macloader buffer overflow

Fixes this log entries.

I/macloader( 1915): Writing murata to /data/.cid.info
D/macloader( 1915): Setting permissions on /data/.cid.info
F/libc    ( 1915): *** vsprintf buffer overflow detected ***
F/libc    ( 1915): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1), thread 1915 (macloader)

Change-Id: I1ccb257bada18030de76a2be40477172993ca2a0