gst,base,sdp: Use specific copy/free or (un)ref instead of g_boxed
Fixes #305 (closed)
SDPMessage
, FlowCombiner
and ParseContext
have specific functions
available to perform copying, freeing and (un)ref'ing. Calling them
directly on versions where they are supported prevents us from going
through GType
machinery and locks that end up the same functions in the
end.
Edited by Marijn Suijten