update for icecast

This update fixes the following issue with icecast:

- Remove the obsoleted icecast-2.3.2-CVE-2011-4612.diff that leads
to invalid access to freed memory (bnc#862096)

Fixed bugs
bnc#862096
icecast-2.3.2-CVE-2011-4612.diff causes access to free'd memory
Selected Binaries
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