to segfault.  This could be exploited by malicious users to crash other
users' mpd.  But more importantly, I believe clients are doing this
unintentionally, and that this is what is causing mpd to segfault for many
people after running for long periods of time.

git-svn-id: https://svn.musicpd.org/mpd/trunk@5649 09075e82-0dd4-0310-85a5-a0d7c8717e4f