Don't double allocate replacement setup for transcoding
Don't double allocate replacement setup for transcoding

This was causing memory leaks because the memory was allocated again
under the converter_ even when it already was allocated due to a
previous run.

pH14/rubinius,jemc/rubinius,jemc/rubinius,jsyeo/rubinius,heftig/rubinius,benlovell/rubinius,dblock/rubinius,dblock/rubinius,pH14/rubinius,ruipserra/rubinius,ngpestelos/rubinius,mlarraz/rubinius,Wirachmat/rubinius,jsyeo/rubinius,jsyeo/rubinius,Wirachmat/rubinius,pH14/rubinius,jsyeo/rubinius,heftig/rubinius,heftig/rubinius,jemc/rubinius,sferik/rubinius,sferik/rubinius,benlovell/rubinius,kachick/rubinius,Wirachmat/rubinius,pH14/rubinius,jsyeo/rubinius,kachick/rubinius,sferik/rubinius,digitalextremist/rubinius,dblock/rubinius,ngpestelos/rubinius,jsyeo/rubinius,jemc/rubinius,Azizou/rubinius,Azizou/rubinius,Azizou/rubinius,dblock/rubinius,mlarraz/rubinius,ruipserra/rubinius,digitalextremist/rubinius,mlarraz/rubinius,sferik/rubinius,jemc/rubinius,Wirachmat/rubinius,mlarraz/rubinius,ngpestelos/rubinius,Azizou/rubinius,digitalextremist/rubinius,ruipserra/rubinius,kachick/rubinius,sferik/rubinius,benlovell/rubinius,Azizou/rubinius,ngpestelos/rubinius,dblock/rubinius,Wirachmat/rubinius,ngpestelos/rubinius,ruipserra/rubinius,heftig/rubinius,kachick/rubinius,digitalextremist/rubinius,dblock/rubinius,jsyeo/rubinius,benlovell/rubinius,heftig/rubinius,heftig/rubinius,mlarraz/rubinius,Azizou/rubinius,kachick/rubinius,ruipserra/rubinius,benlovell/rubinius,pH14/rubinius,kachick/rubinius,ngpestelos/rubinius,digitalextremist/rubinius,mlarraz/rubinius,jemc/rubinius,Wirachmat/rubinius,digitalextremist/rubinius,benlovell/rubinius,kachick/rubinius,heftig/rubinius,sferik/rubinius,ruipserra/rubinius,mlarraz/rubinius,kachick/rubinius,Wirachmat/rubinius,pH14/rubinius,sferik/rubinius,pH14/rubinius,benlovell/rubinius,ruipserra/rubinius,Azizou/rubinius,jemc/rubinius,ngpestelos/rubinius,dblock/rubinius,digitalextremist/rubinius